Showing structure for (12r,14s,15r,16s)-11,16-dimethyl-20-oxo-17-oxa-1,11-diazapentacyclo[10.8.1.0²,⁷.0⁸,²¹.0¹⁴,¹⁹]henicosa-2,4,6,8(21),18-pentaene-15-carbaldehyde