Skeletal formulae of betaenone <a href="https://en.wikipedia.org/wiki/Betaenone_A" class="extiw" title="w:Betaenone A">A</a>, <a href="https://en.wikipedia.org/wiki/Betaenone_B" class="extiw" title="w:Betaenone B">B</a> and <a href="https://en.wikipedia.org/wiki/Betaenone_C" class="extiw" title="w:Betaenone C">C</a>
<a href="//commons.wikimedia.org/wiki/User:Anypodetos" title="User:Anypodetos">Anypodetos</a>
<span class="int-own-work" lang="en">Own work</span>