Showing structure for methyl (1r,9r,11s,14z,15r,17s,19s)-14-ethylidene-4,6-dimethoxy-18-oxa-2,12-diazahexacyclo[9.6.1.1⁹,¹⁵.0¹,⁹.0³,⁸.0¹²,¹⁷]nonadeca-3,5,7-triene-19-carboxylate