<a href="https://en.wikipedia.org/wiki/Skeletal_formula" class="extiw" title="w:Skeletal formula">Skeletal formula</a> of the <a href="https://en.wikipedia.org/wiki/fluorophore" class="extiw" title="w:fluorophore">fluorophore</a> <a href="https://en.wikipedia.org/wiki/7-Amino-4-methylcoumarin" class="extiw" title="w:7-Amino-4-methylcoumarin">7-Amino-4-methylcoumarin</a>.
<a href="//commons.wikimedia.org/wiki/User:Shinryuu" title="User:Shinryuu">Shinryuu</a>
Own work  using: <a rel="nofollow" class="external text" href="http://www.cambridgesoft.com/software/ChemDraw/">ChemBioDraw Ultra v12.0</a>