%xymcomb.tex 
%Copyright (C) 1993, Shinsaku Fujita, All rights reserved. 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%This file is a part of xymtex.tex that is the manual of the macro 
%package `XyMTeX' for drawing chemical structural formulas.  
%This file is not permitted to be translated into Japanese and any other
%languages. 
\typeout{``xymcomb.tex''---
This file is a part of xymtex.tex that is the manual of the macro %
package `XyMTeX'. 1993/12/1 S. Fujita}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\chapter{Combining structures}
\section{General Remarks}
\subsection{Coordinates of the Picture Environment}
The macros described in the other chapters of this manual 
can be combined to construct a more complicated structural formula. 
This treatment is based on the fact that 
two or more picture environments of \LaTeX{} can be nested, 
recognizing each inner picture environment as a \LaTeX{} picture box. 

A picture environment of \LaTeX{} is set up with 
the following statement: 
\begin{center}
\begin{minipage}{10cm}
\tt
\verb/\/begin\{picture\}($L_{x}, L_{y}$)($S_{x}, S_{y}$), \\
$\vdots$ \\
\verb/\/end\{picture\}
\end{minipage}
\end{center}
This command 
produces an $L_{x}\times L_{y}$ area for drawing a structural 
formula, where the origin (0, 0) can be shifted by giving 
differences $(S_{x}, S_{y})$. 

The {\tt \verb/\/put($P_{x}, P_{y}$)} command places an inner picture 
box ({\em e.g.}, a fragment created by a macro of the present paper) 
so that the reference point of the inner picture 
is located on the ($P_{x}, P_{y}$) point of 
the outer picture environment. 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{Reference Points and Inner Origins}

A macro of \XyMTeX{} is based on an inner picture environment, 
which has an original point for drawing a structure and 
a set of sifted values. Suppose the definition of the macro contains 
an inner picture environment represented by 
\begin{center}
\begin{tt}
\verb/\/begin\{picture\}($\ell_{x}, \ell_{y}$)($s_{x}, s_{y}$). 
\end{tt}
\end{center}
The point ($s_{x}, s_{y}$) of the inner environment 
becomes the (0,0) point 
of the structure generated by the macro. 
This point is called the reference point of the macro in 
the present manual. On the other hand, 
the origin of the inner environment becames the ($-s_{x}, -s_{y}$) 
point of the generated structure.  
It is called the inner origin of the macro. 

For example, the command \verb/\cyclohexanev/ generates a 
skeleton, 
\begin{xymspec}
\cyclohexanev{}
\end{xymspec}
in which the symbol $\circ$ represents the inner origin and 
the symbol $\bullet$ represents a reference point. 
The macro \verb/\cyclohexanev/ is defined on the basis of 
an inner picture environment: 
\begin{center}
\begin{tt}
\verb/\/begin\{picture\}(800, 800)(-400, -240). 
\end{tt}
\end{center}
As a result, the inner origin is referred to as the 
(400, 200) point of the resulting macro; and the 
inner $(-400,-240)$ point is regarded as the new origin (0, 0), 
which is the reference point of the macro. 

Each macro is characterized by the referece point and the inner origin, 
which are shown in a framed box beside the specification of the macro. 
The reference point and the inner origin of each macro are revealed 
by stating \verb/\origpttrue/ in the preamble of a manuscript. 
Then, they are printed with the symbols $\circ$ and $\bullet$; and 
the values of them appear on the display. For example, the above 
cyclohexane structure is typeset by the following statement: 
\begin{verbatim}
{\origpttrue
\begin{center}
\cyclohexanev{}
\end{center}}
\end{verbatim}
or by an equivalent statement: 
\begin{verbatim}
\begin{xymspec}
\cyclohexanev{}
\end{xymspec}
\end{verbatim}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{Setting Coordinates}
The command \verb/\put/ typesets an object,   
which may be a character string, 
a structure generated with a macro, or others. 
When a macro is written as an argument of the command \verb/\put/ 
in an outer picture environment, 
a structure due to the macro is typeset so that 
the reference point of the macro is placed on the point designated by the 
\verb/\put/ command. 
For example, 
\begin{verbatim}
{\origpttrue
\begin{picture}(1000,700)(0,0)
\put(0,0){\cyclohexanev{}}
\put(0,0){\circle{80}}
\put(400,240){\circle{80}}
\end{picture}
}
\end{verbatim}
produces 
\begin{center}
{\origpttrue
\begin{picture}(1000,700)(0,0)
\put(0,0){\cyclohexanev{}}
\put(0,0){\circle{80}}
\put(400,240){\circle{80}}
\end{picture}
}
\end{center}
\noindent
The reference point with $\bullet$ is encircled by 
an outer circle representing the origin of the outer 
picture environment. The inner origin represented with an open circle 
is encircled by an outer circle centered at the $(400, 240)$ 
point of the outer 
environment, resulting in a double circle. 

Since we adopt a bond length equal to 200 and a bond slope of 
(5, 3) or (3, 5), such values as 200, 
171, and 103 (and any combinations of these values) 
appear frequently in typsetting combined structures.  
Note that 171 is approximately equal to $200\times (5/\sqrt{34})$ 
and 103 is aproximately equal to $200\times (3/\sqrt{34})$.  
For example, a spiro compound can be typeset 
by the statement: 
\begin{verbatim}
\begin{picture}(1200,900)(0,0)
\put(0,0){\cyclohexanev{}}
\put(342,200){\cyclohexanev{}}
\put(684,0){\cyclohexanev{}}
\end{picture}
\end{verbatim}
The resulting structures are 
\begin{center}
\begin{picture}(1000,900)(0,0)
\put(0,0){\cyclohexanev{}}
\put(342,200){\cyclohexanev{}}
\put(684,0){\cyclohexanev{}}
\end{picture}
\qquad \qquad
{\origpttrue
\begin{picture}(1000,900)(0,0)
\put(0,0){\cyclohexanev{}}
\put(342,200){\cyclohexanev{}}
\put(684,0){\cyclohexanev{}}
\end{picture}
}
\end{center}
The right-hand structure is to show the reference points and 
the inner origins of the fragements used. 
In this case, 
the shifted values $(-400,-240)$ of each fragment are equal 
to those of another fragment, 
since each fragment is generated by the same macro. 
Hence, the argument coordinates of the \verb/\put/ 
can be calculated without considering such shifted values. 
Thus, the value 342 is equal to 171$\times$2, and
684 is equal to 171$\times$4.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{Combination of Macros Through a Bond}

Since each of the macros described in the other chapters 
of the present manual is based on a picture environment, 
one of the simplest ways of combining structures 
is to place individual structures into an outer picture environment. 
Such combination of macros increases the variety of 
structural diagrams. 

In order to illustrate the method of calculating coordinates, 
we take the drawing of biphenyl as the first example:
\begin{verbatim}
\begin{picture}(1200,600)(0,0)
\put(0,0){\bzdrh{4==}}
\put(546,0){\bzdrh{}}
\end{picture}
\end{verbatim}
This statement produces the following structure: 
\begin{center}
\begin{picture}(1200,600)(0,0)
\put(0,0){\bzdrh{4==}}
\put(546,0){\bzdrh{}}
\end{picture}
\end{center}
The first argument of each \verb/\put/ command represents 
the coordinates of the point on which the structure is printed. 

The inner origin of the macro \verb/\bzdrh/ is the leftmost position 
of the benzene ring.  The structure typeset by the 
command \verb/\put(0,0)/\verb/{\bzdrh{4==}}/ has a 
rightmost terminal point at $(546,0)$ with respect to 
the inner picture environment.\footnote{%%%%%%%%%%%%%%%%%%%%%%
The absolute cooridnates with respect to the outer 
picture environment is $(546+400, 0+240)$ in this case.} %%%%%%  
The value $546$ is calculated by 
$406 + 140$, where 
406 is the length of the horizontal hexagon (= $103+200+103$) and 
140 is the bond length produced by the argument \verb/{4==}/. 

The command \verb/\put(546,0)/\verb/{\bzdrh{}}/ prints 
another benzene ring so that the inner origin of 
this benzene is placed on the terminal position of the former 
benzene ring.  
Note again that the argument coordinates of \verb/\put/ 
can be calculated without considering such shifted values, 
$(400,240)$, since each of the fragments is generated by the same macro.  

Let us draw 1-chloro-4-morphorinobenzene 
by means of two different ways. 
\begin{verbatim}
\begin{picture}(1200,600)(0,0)
\put(0,0){\bzdrh{1==Cl;4==}}
\put(546,0){\sixheteroh[H]{1==N;4==O}{}}
\end{picture}
\qquad
\begin{picture}(1200,600)(0,0)
\put(0,0){\bzdrh{1==Cl;4==N}}
\put(566,0){\sixheteroh[H]{1=={ };4==O}{}}
\end{picture}
\end{verbatim}
These statements produce essentially the same structure: 
\begin{center}
\begin{picture}(1200,600)(0,0)
\put(0,0){\bzdrh{1==Cl;4==}}
\put(546,0){\sixheteroh[H]{1==N;4==O}{}}
\end{picture}
\qquad
\begin{picture}(1200,600)(0,0)
\put(0,0){\bzdrh{1==Cl;4==N}}
\put(556,0){\sixheteroh[H]{1=={ };4==O}{}}
\end{picture}
\end{center}
It should be noted that \verb/{4==}/ in SUBSLIST produces a 
bond without a substituent at the 4-position of the benzene ring, 
while \verb*/1=={ }/ in ATOMLIST creates a vacancy to 
accomodate the nitrogen atom. 

The following example illustrates a more complicated structure 
with a vertical bond linking two fragment structures. 
Thus, the statement 
\begin{verbatim}
\begin{picture}(1200,1500)(-200,-600)
\put(0,0){\decaheterov[H]{4a==N}{4D==O;7B==HO;{{10}A}==H}}
\put(0,-546){\bzdrv{1==;3==OMe;4==OMe;6==Br}}
\end{picture}
\end{verbatim}
prints the following diagram: 
\hspace*{3cm}
\begin{center}
\begin{picture}(1200,1500)(-200,-600)
\put(0,0){\decaheterov[H]{4a==N}{4D==O;7B==HO;{{10}A}==H}}
\put(0,-546){\bzdrv{1==;3==OMe;4==OMe;6==Br}}
\end{picture}
\end{center}
\noindent
The first argument of each \verb/\put/ command represents 
the coordinates of the point on which the structure is printed. 
The value $-546$ is calculated by 
140 (bond length) + 406 
(the height of the hexagon = $103+200+103$), 
because the inner origin of the structure printed by 
\verb/\decaheterov/ is position 5 (the left carbon atom 
adjacent to the nitrogen atom) and that of the latter structure 
is position 4 (the bottom carbon attached by the methoxy group). 

The following example illustrates 
a combined structure in which two cyclic 
substructures are linked through an aliphatic unit 
\begin{verbatim}
\begin{picture}(800,1000)(0,0)
\put(0,0){\cyclohexaneh[H]{4==}}
\put(754,0){\bzdrh{1==}}
\put(520,100){\tetrahedral{0==C;1D==O}}
\end{picture}
\end{verbatim}
This statement produces 
\begin{center}
\begin{picture}(800,1000)(0,0)
\put(0,0){\cyclohexaneh[H]{4==}}
\put(754,0){\bzdrh{1==}}
\put(520,100){\tetrahedral{0==C;1D==O}}
\end{picture}
\end{center}
The calculation of the values for \verb/\tetrahedral/ is 
slightly complicated, since its inner origin is 
different from those of the other commands. 
The right terminal position due to 
the \verb/\cyclohexaneh/ 
is the point $(546,0)$, the $x$-coordinate of which is equal 
to the length of a benzene ring (406) plus a bond length (140). 
The left terminal position due to 
the \verb/\bzdrh/ is the point $(614, 0)$, 
because $754-140=614$. 
Then, the aliphatic unit (\verb/\tetrahedral/) should be placed at the 
average position of $x$-coordinate $(546 + 614)/2 = 580$. 
Since the inner origin of the 
the \verb/\cyclohexaneh/ is $(400, 240)$ and that of 
the \verb/\tetrahedral/ is $(300, 300)$, 
the $x$-coordinate is calculated to be 
$580-(300-240)= 520$ while 
the $y$-coordinate is calculated to be $400-300=100$. 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{Using Building Blocks}

Macros \verb/\sixunitv/ and \verb/\fiveunitv/ 
are designed for building a new fused ring system:  
\begin{verbatim}
\sixunitv[BONDLIST]{ATOMLIST}{SUBSLIST}{OMIT}
\fiveunitv[BONDLIST]{ATOMLIST}{SUBSLIST}{OMIT}
\end{verbatim}
where argument OMIT (a--f for \verb/\sixunitv/ and 
a--e for \verb/\fiveunitv/) 
is a list of characters, each of which represents one bond to be omitted. 
The other arguments have the same formats as described 
in the preceding sections. 
These macros produce five- and six-membered fragments respectively, 
in which the bond assigned by argument OMIT is deleted to 
be a fused vacant bond. 
They include the mechanism of the hetroatom truncation 
in order to be applied 
to typesetting both carbocycles and heterocycles. 
For example, a tricyclic system 

%\hspace*{3cm}

\begin{center}
\begin{picture}(1200,1500)(-200,-600)
\put(0,0){\decaheterov[fhk]{3==N}{6==CH$_3$O;7==CH$_3$O}}
\put(513,-303){\sixunitv[H]{1=={ }}%
  {3==C$_2$H$_5$;4==CH$_2$COOC$_2$H$_5$}{f}}
\end{picture}
\end{center}

\noindent
is typeset with the statement: 
\begin{verbatim}
\begin{picture}(1200,1500)(-200,-600)
\put(0,0){\decaheterov[fhk]{3==N}{6==CH$_3$O;7==CH$_3$O}}
\put(513,-303){\sixunitv[H]{1=={ }}%
  {3==C$_2$H$_5$;4==CH$_2$COOC$_2$H$_5$}{f}}
\end{picture}
\end{verbatim}
In order to examine the details of the combination, 
let us typeset the structure with the first command:
\begin{xymspec}
\begin{picture}(1200,1500)(-200,-600)
\put(0,0){\decaheterov[fhk]{3==N}{6==CH$_3$O;7==CH$_3$O}}
\put(0,0){\circle{80}}
\end{picture}
\end{xymspec}
and separately the structure with the secdond command: 
\begin{xymspec}
\begin{picture}(1200,1500)(-200,-600)
\put(513,-303){\sixunitv[H]{1=={ }}%
  {3==C$_2$H$_5$;4==CH$_2$COOC$_2$H$_5$}{f}}
\put(0,0){\circle{80}}
\end{picture}
\end{xymspec}
It should be noted that argument ATOMLIST in 
the \verb/\sixunitv/ macro contains the assignment ``\verb*/1=={ }/'' which 
assures the vacant bridgehead position.  
This vacancy is occupied by the bridgehead nitrogen 
printed by the \verb/\decaheterov/ macro. 

The following examples illustrate combinations of 
\verb/decaheterov/ and \verb/\sixunitv/ to produce 
a borane and the related carbocycle. 
\begin{verbatim}
\begin{picture}(1200,1000)(0,0)
\put(0,0){\decaheterov[H]{}{}}
\put(171,303){\sixunitv[H]{4=={ }}{}{cd}}
\end{picture}
\qquad
\begin{picture}(1200,1000)(0,0)
\put(0,0){\decaheterov[H]{8a==B}{}}
\put(171,303){\sixunitv[H]{4=={ }}{}{cd}}
\end{picture}
\qquad
\begin{picture}(1200,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{a}}
\put(342,0){\sixunitv[H]{}{}{ef}}
\put(171,303){\sixheterovi[H]{1==N}{}}
\end{picture}
\end{verbatim}
These statements produce the following structures. 
\begin{center}
\begin{picture}(1200,1000)(0,0)
\put(0,0){\decaheterov[H]{}{}}
\put(171,303){\sixunitv[H]{}{}{cd}}
\end{picture}
\qquad
\begin{picture}(1200,1000)(0,0)
\put(0,0){\decaheterov[H]{8a==B}{}}
\put(171,303){\sixunitv[H]{}{}{cd}}
\end{picture}
\qquad
\begin{picture}(1200,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{a}}
\put(342,0){\sixunitv[H]{}{}{ef}}
\put(171,303){\sixheterovi[H]{1==B}{}}
\end{picture}
\end{center}
The second and third examples above show alternative ways 
to depict the carborane. 
Note that the argument \verb*/{2=={ }}/ in the third example 
is necessary to print the desired structures. 

The following two exmaples involve a combination of 
two \verb/\sixunitv/ commands. 
\begin{verbatim}
\begin{picture}(1200,800)(0,0)
\put(0,0){\sixunitv[H]{3==O}{1D==O;4==CH$_{3}$}{b}}
\put(342,0){\sixunitv[H]{5=={ }}{4D==O}{e}}
\end{picture}
\qquad
\begin{picture}(1200,800)(0,0)
\put(0,0){\sixunitv[c]{}{}{b}}
\put(342,0){\sixunitv[a]{}{}{e}}
\end{picture}
\end{verbatim}
These statements provide 
\begin{center}
\begin{picture}(1200,800)(0,0)
\put(0,0){\sixunitv[H]{3==O}{1D==O;4==CH$_{3}$}{b}}
\put(342,0){\sixunitv[H]{5=={ }}{4D==O}{e}}
\end{picture}
\qquad
\begin{picture}(1200,800)(0,0)
\put(0,0){\sixunitv[c]{}{}{b}}
\put(342,0){\sixunitv[a]{}{}{e}}
\end{picture}
\end{center}

The following exmaple involves a combination of 
three \verb/\sixunitv/ commands and 
one \verb/\bzdrv/ command. 
\begin{verbatim}
\begin{picture}(1600,800)(0,0)
\put(0,0){\bzdrv[r]{1==OH;5==THPO}}
\put(342,0){\sixunitv[c]{2==O}{1D==O}{be}}
\put(684,0){\sixunitv[H]{6=={ }}{1==CH$_{3}$}{be}}
\put(1026,0){\sixunitv[H]{}{3D==O}{e}}
\end{picture}
\end{verbatim}
This statement provides 
\begin{center}
\begin{picture}(1600,1000)(0,0)
\put(0,0){\bzdrv[r]{1==OH;5==THPO}}
\put(342,0){\sixunitv[c]{2==O}{1D==O}{be}}
\put(684,0){\sixunitv[H]{6=={ }}{1==CH$_{3}$}{be}}
\put(1026,0){\sixunitv[H]{}{3D==O}{e}}
\end{picture}
\end{center}

A bicyclo[3.3.1]nonane is typeset by this technique. 
\begin{verbatim}
\begin{picture}(1600,800)(0,0)
\put(0,0){\cyclohexaneh[H]{3Sa==\lmoiety{H$_{5}$C$_{2}$OCO\kern2em}}}
\put(200,0){\sixunith[H]{}{3D==O;4==CO$_{2}$C$_{2}$H$_{5}$}{af}}
\end{picture}
\qquad
\begin{picture}(1600,800)(0,0)
\put(0,0){\cyclohexaneh[H]{3Sa==\lmoiety{H$_{5}$C$_{2}$OCO\kern2em}}}
\put(200,0){\fiveunith[H]{}{2D==O;1==CO$_{2}$C$_{2}$H$_{5}$}{c}}
\end{picture}
\end{verbatim}
These statements provide equivalent results as follows. 
\begin{center}
\begin{picture}(1600,800)(0,0)
\put(0,0){\cyclohexaneh[H]{3Sa==\lmoiety{H$_{5}$C$_{2}$OCO\kern2em}}}
\put(200,0){\sixunith[H]{}{3D==O;4==CO$_{2}$C$_{2}$H$_{5}$}{af}}
\end{picture}
\qquad
\begin{picture}(1600,800)(0,0)
\put(0,0){\cyclohexaneh[H]{3Sa==\lmoiety{H$_{5}$C$_{2}$OCO\kern2em}}}
\put(200,0){\fiveunith[H]{}{2D==O;1==CO$_{2}$C$_{2}$H$_{5}$}{c}}
\end{picture}
\end{center}

A vertical form of bicyclo[3.3.1]nonane is also typeset by this technique. 
\begin{verbatim}
\begin{picture}(800,1000)(0,0)
\put(0,0){\cyclohexanev[H]{6Sa==\lmoiety{H$_{2}$C=(H$_{3}$C)CCH$_{2}$};
2Sa==CH$_{3}$}}
\put(0,200){\sixunitv[a]{}{6D==O}{cd}}
\end{picture}
\end{verbatim}
This statement provides 
\begin{center}
\begin{picture}(800,1000)(0,0)
\put(0,0){\cyclohexanev[H]{6Sa==\lmoiety{H$_{2}$C=(H$_{3}$C)CCH$_{2}$};
2Sa==CH$_{3}$}}
\put(0,200){\sixunitv[a]{}{6D==O}{cd}}
\end{picture}
\end{center}

[7](2,6)- and [6](2,6)Pyridinophanes are other examples typeset by 
this technique.  In a similar way, 13-Bromo-(2,6)metacyclophane 
can be printed easily. 
\begin{verbatim}
\begin{picture}(1200,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{ab}}
\put(342,0){\sixunitv[H]{6=={ }}{}{ef}}
\put(171,303){\pyridinevi{}}
\end{picture}
\qquad
\begin{picture}(1200,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{ab}}
\put(342,0){\fiveunitvi[H]{5=={ }}{}{de}}
\put(171,303){\pyridinevi{}}
\end{picture}
\qquad
\begin{picture}(1200,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{ab}}
\put(342,0){\sixunitv[H]{6=={ }}{}{ef}}
\put(171,303){\bzdrv{4Sa==\kern.5em\raise1ex\hbox{Br}}}
\end{picture}
\end{verbatim}
These statements provide 
\begin{center}
\begin{picture}(800,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{ab}}
\put(342,0){\sixunitv[H]{6=={ }}{}{ef}}
\put(171,303){\pyridinevi{}}
\end{picture}
\qquad
\begin{picture}(800,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{ab}}
\put(342,0){\fiveunitvi[H]{5=={ }}{}{de}}
\put(171,303){\pyridinevi{}}
\end{picture}
\qquad
\begin{picture}(800,1000)(0,0)
\put(0,0){\sixunitv[H]{2=={ }}{}{ab}}
\put(342,0){\sixunitv[H]{6=={ }}{}{ef}}
\put(171,303){\bzdrv{4Sa==\kern.5em\raise1ex\hbox{Br}}}
\end{picture}
\end{center}

We have reported an article on dye releasers for instant color 
photography, in which a variety of structural formulas have been 
typeset by means of original utilities of the \LaTeX{} 
picture environment \cite{fujita5}. 
The present \XyMTeX{} provides us with a more versatile tool of 
drawing such complex molecules.  Thus, 
the formula of a cyan dye releaser for instant color photography is 
typeset by the statement: 
\begin{verbatim}
\begin{picture}(4000,2000)(0,-1000)
\put(0,0){\bzdrv{1==OH;2==NH--SO$_{2}$;4==OC$_{16}$H$_{33}$;5==CH$_{3}$}}
\put(993,230){\bzdrh{1==;2==OCH$_{2}$CH$_{2}$OCH$_{3}$;%
5==NH--SO$_{2}$}}
\put(1890,-140){\bzdrh{1==;5==SO$_{2}$--NH}}
\put(2750,-850){\naphdrh{1==;5==OH;8==}}
\put(1800,-850){\bzdrh{1==O$_{2}$N;5==SO$_{3}$CH$_{3}$;4==N=N}}
\end{picture}
%}
\end{verbatim}

\clearpage
These commands produce the following structure: 
\begin{center}
%\fbox{
\begin{picture}(4000,2000)(0,-1000)
\put(0,0){\bzdrv{1==OH;2==NH--SO$_{2}$;4==OC$_{16}$H$_{33}$;5==CH$_{3}$}}
\put(993,230){\bzdrh{1==;2==OCH$_{2}$CH$_{2}$OCH$_{3}$;%
5==NH--SO$_{2}$}}
\put(1890,-140){\bzdrh{1==;5==SO$_{2}$--NH}}
\put(2750,-850){\naphdrh{1==;5==OH;8==}}
\put(1800,-850){\bzdrh{1==O$_{2}$N;5==SO$_{3}$CH$_{3}$;4==N=N}}
\end{picture}
%}
\end{center}