Synonyms: 3,4-Secocuran-3-one,1-acetyl-20,21-didehydro-17,19-epoxy-4-methyl-, (19R)-; Strychnobrasiline(8CI); 1H,3H-6a,4-(Ethaniminometheno)pyrano[3,4-a]carbazol-6(5H)-one,11-acetyl-4a,11,11a,11b-tetrahydro-3,14-dimethyl-,[3R-(3R*,4aR*,6aS*,11aS*,11bR*)]-