Showing structure for methyl (1r,10s,12r,14s,15s)-14-ethyl-4-methoxy-19-oxa-8,16-diazahexacyclo[10.6.2.0¹,⁹.0²,⁷.0¹⁰,¹⁵.0¹⁶,²⁰]icosa-2,4,6,8-tetraene-10-carboxylate