Showing structure for methyl 5-hydroxy-2,6-dimethyl-21-oxo-14-oxa-8-azahexacyclo[11.6.1.1⁵,¹⁹.0²,¹⁰.0³,⁸.0¹⁷,²⁰]henicosa-1(19),13(20),15,17-tetraene-18-carboxylate