Showing structure for (1r,10s,12r,13r,16r,17s)-16-methyl-15-oxa-8,19-diazahexacyclo[11.8.0.0¹,⁹.0²,⁷.0¹⁰,¹⁹.0¹²,¹⁷]henicosa-2,4,6,8-tetraene