Showing structure for methyl 20-ethyl-15-hydroxy-6-methoxy-17-oxa-3,13-diazahexacyclo[11.7.0.0²,¹⁰.0³,¹⁸.0⁴,⁹.0¹⁶,²⁰]icosa-2(10),4,6,8-tetraene-18-carboxylate