Synonyms: Spiro(1H-cyclopenta(b)pyrrolo(1,2-a)azepine-11(10H),2'(5'H)-furan)-5',10-dione, 2,3,5,6,7,8-hexahydro-3'-methoxy-4',9-dimethyl-, (2'R*,11aR*)-;Spiro(1H-cyclopenta(b)pyrrolo(1,2-a)azepine-11(10H),2'(5'H)-furan)-5',10-dione, 2,3,5,6,7,8-hexahydro-3'-methoxy-4',9-dimethyl-, (2'R*,11aS*)-