<a href="https://en.wikipedia.org/wiki/Corticosterone" class="extiw" title="en:Corticosterone">en:Corticosterone</a> structural diagram
<p>Created by <a href="https://en.wikipedia.org/wiki/User:Iorsh" class="extiw" title="en:User:Iorsh">Maxim Iorsh</a> with <a href="https://en.wikipedia.org/wiki/xymtex" class="extiw" title="en:xymtex">en:xymtex</a>
</p>
<pre>

\documentclass{letter}
\usepackage{epic,carom}
\pagestyle{empty}
\begin{document}
\begin{picture}(1000,500)
\put(0,0){\steroid[d]{3D==O;{{10}}==\lmoiety{H{3}};{{13}}==\lmoiety{H{3}};{{11}}==HO}}
\put(684,606){\sixunitv{}{2D==O;1==OH}{cdef}}
\end{picture}
\end{document}

</pre>
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