2D structure of 5-HT<sub>3</sub> antagonist <a href="https://en.wikipedia.org/wiki/bemesetron" class="extiw" title="w:bemesetron">bemesetron</a>.
<a href="//commons.wikimedia.org/wiki/User:Vaccinationist" title="User:Vaccinationist">Vaccinationist</a>
<span class="int-own-work" lang="en">Own work</span>