Showing structure for (6z)-6-ethylidene-3,5,9-trihydroxy-8-isopropyl-11,20-dimethyl-4-oxa-11,20-diazapentacyclo[8.7.3.0¹,¹⁰.0²,⁷.0¹²,¹⁷]icosa-12,14,16-triene-2-carboxylic acid