Showing structure for 1-[(1s,9r,16r,21s)-4-methoxy-2,12-diazahexacyclo[14.2.2.1⁹,¹².0¹,⁹.0³,⁸.0¹⁶,²¹]henicosa-3(8),4,6-trien-2-yl]ethanone