Showing structure for methyl (8r,13e,14s,16s,17r,18s)-13-ethylidene-8-hydroxy-1,11-diazapentacyclo[12.3.1.0²,⁷.0⁸,¹⁷.0¹¹,¹⁶]octadeca-2,4,6-triene-18-carboxylate