Chemical structure of <a href="https://en.wikipedia.org/wiki/macitentan" class="extiw" title="w:macitentan">macitentan</a>
<a href="//commons.wikimedia.org/wiki/User:Anypodetos" title="User:Anypodetos">Anypodetos</a>
2012-08-22
<span class="int-own-work" lang="en">Own work</span>