Structure of Amine 9D-178, based on W.D. Jamrack, <i>Rare Metal Extraction by Chemical Engineering Techniques</i>. Pergamon Press, 1963, p. 164.
<a href="//commons.wikimedia.org/wiki/User:Wostr" title="User:Wostr">Wostr</a>
<span class="int-own-work" lang="en">Own work</span>