Structure of alchivemycin A.
<a href="//commons.wikimedia.org/wiki/User:Wostr" title="User:Wostr">Wostr</a>
Own work based on: Y. Igarashi et al., <i>Alchivemycin A, a Bioactive Polycyclic Polyketide with an Unprecedented Skeleton from </i>Streptomyces sp<i>.</i>, Organic Letters, 12 (15) 2010, pp. 3402–3405, <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/10.1021%2Fol1012982">10.1021/ol1012982</a>.