Showing structure for (2s,13s,15r,16r,19s,20r,21r)-11,19-dimethyl-18-oxa-1,11-diazahexacyclo[11.8.0.0²,¹⁶.0⁴,¹².0⁵,¹⁰.0¹⁵,²⁰]henicosa-4(12),5,7,9-tetraen-21-ol