2-Undecanone
<a href="//commons.wikimedia.org/wiki/User:Isilanes~commonswiki" title="User:Isilanes~commonswiki">Isilanes</a>
2007-05-12
Own work  using: <a href="https://en.wikipedia.org/wiki/ChemTool" class="extiw" title="w:ChemTool">ChemTool</a>.