<a href="https://en.wikipedia.org/wiki/Skeletal_formula" class="extiw" title="w:Skeletal formula">Skeletal formula</a> of <a href="https://en.wikipedia.org/wiki/halichondrin_B" class="extiw" title="w:halichondrin B">halichondrin B</a>.
<a href="//commons.wikimedia.org/wiki/User:Charlesy" title="User:Charlesy">charlesy</a>
2010-10-20
<span class="int-own-work" lang="en">Own work</span>