Showing structure for methyl (1r,10r,12s,18s)-18-formyl-12-[(1z)-prop-1-en-1-yl]-8,15-diazapentacyclo[10.5.1.0¹,⁹.0²,⁷.0¹⁰,¹⁵]octadeca-2,4,6,8-tetraene-18-carboxylate