Skeletal formula of <a href="https://en.wikipedia.org/wiki/benafentrine" class="extiw" title="w:benafentrine">benafentrine</a> (also known as benzafentrine and AH 21-132) — a dual <a href="https://en.wikipedia.org/wiki/Phosphodiesterase_3" class="extiw" title="w:Phosphodiesterase 3">PDE3</a> and <a href="https://en.wikipedia.org/wiki/Phosphodiesterase_4" class="extiw" title="w:Phosphodiesterase 4">PDE4</a> inhibitor. Created with <a rel="nofollow" class="external text" href="http://www.chemdoodle.com">ChemDoodle</a> and <a rel="nofollow" class="external text" href="http://www.adobe.com/products/illustrator.html">Adobe Illustrator CC 2017</a>.
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Own work  using: <a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/3084603">PubChem</a>