Chemical structure of <a href="https://en.wikipedia.org/wiki/19-Nordehydroepiandrosterone" class="extiw" title="w:19-Nordehydroepiandrosterone">19-Nordehydroepiandrosterone</a>, an androgen pro-hormone of <a href="https://en.wikipedia.org/wiki/Nandrolone" class="extiw" title="w:Nandrolone">nandrolone</a> (19-nortestosterone).
<a href="//commons.wikimedia.org/wiki/User:Krishnavedala" title="User:Krishnavedala">Krishnavedala</a>
<span class="int-own-work" lang="en">Own work</span>