Synonyms: 2(3H)-Furanone,5-[(1S,2Z,3aR,8S,10aS,10bR)-decahydro-2-(3-methoxy-4-methyl-5-oxo-2(5H)-furanylidene)-1-methyl-2H-furo[3,2-c]pyrrolo[1,2-a]azepin-8-yl]dihydro-3-methyl-,(3S,5S)- (9CI); 2(3H)-Furanone, 5-[decahydro-2-(3-methoxy-4-methyl-5-oxo-2(5H)-furanylidene)-1-methyl-2H-furo[3,2-c]pyrrolo[1,2-a]azepin-8-yl]dihydro-3-methyl-,[1S-[1a,2Z,3ab,8a(3R*,5R*),10aa,10ba]]-; Protostemonine (8CI);2H-Furo[3,2-c]pyrrolo[1,2-a]azepine, 2(3H)-furanone deriv.