Showing structure for methyl (1r,11r,12s,13z)-13-ethylidene-17-formyl-3,18-diazapentacyclo[10.6.1.0²,¹⁰.0⁴,⁹.0¹⁴,¹⁸]nonadeca-2(10),4,6,8,14,16-hexaene-11-carboxylate