Coclobine

(16aS)-3,5,16a,17,18,19-Hexahydro-9,21,22,26-tetramethoxy-17-methyl-2H-1,24:12,15-dietheno-6,10-metheno-16H-pyrido[2',3':17,18][1,10]dioxacycloicosino[2,3,4-ij]isoquinoline