The package supplies a nifty mechanism to assemble larger molecules from predefined fragments, or sub-molecules. The following (hand-coded) example builds aspirin from two sub-molecules:
%\lstinputlisting{hand-coded-tex/aspirin.tex}
\input{hand-coded-tex/stuff}
As a more advanced example, let us piece together the structure of Sodium Green, a fluorescent sodium indicator dye (the figure below was ripped from an information sheet by the supplier, Molecular Probes).
