Showing structure for methyl (1s,10s,11s,12z,17s)-12-ethylidene-2-oxo-9,14-diazapentacyclo[9.5.2.0¹,⁹.0³,⁸.0¹⁴,¹⁷]octadeca-3,5,7-triene-10-carboxylate