A structural drawing of <a href="https://en.wikipedia.org/wiki/Camphene" class="extiw" title="en:Camphene">Camphene</a>
<a href="//commons.wikimedia.org/wiki/User:Inductiveload" title="User:Inductiveload">Inductiveload</a>
<span class="int-own-work" lang="en">Own work</span>