Structural formula of the <a href="https://en.wikipedia.org/wiki/neoflavonoid" class="extiw" title="w:neoflavonoid">neoflavonoid</a> 4-phenylcoumarine (4-phenyl-1,2-benzopyrone)
<a href="//commons.wikimedia.org/wiki/User:Nono64" title="User:Nono64">Nono64</a>
2010-01-25
<span class="int-own-work" lang="en">Own work</span>