Structure of abiesadine I.
<a href="//commons.wikimedia.org/wiki/User:Wostr" title="User:Wostr">Wostr</a>
<span class="int-own-work" lang="en">Own work</span>, based on <a href="//commons.wikimedia.org/w/index.php?title=File:Abiesadine_I.svg&amp;action=edit&amp;redlink=1" class="new" title="File:Abiesadine I.svg (page does not exist)">File:Abiesadine I.svg</a> (which was based on Yong-Li Li et. al., <i>Chemical constituents of</i> Abies nukiangensis, "Phytochemistry", vol. 106, 2014, pp. 116–123, <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.phytochem.2014.07.003">10.1016/j.phytochem.2014.07.003</a>).