Chemical Barnstar
<a href="//commons.wikimedia.org/wiki/User:Chrumps" title="User:Chrumps">Chrumps</a>
<span class="int-own-work" lang="en">Own work</span> + <a href="//commons.wikimedia.org/wiki/File:Original_Barnstar.png" title="File:Original Barnstar.png">Image:Original Barnstar.png</a>