Synonyms: (1aS)-6-Amino-8β-(aminocarbonyloxymethyl)-1,1aα,2,8,8aα,8bα-hexahydro-1-(benzyloxycarbonyl)-8a-methoxy-5-methylazirino[2',3':3,4]pyrrolo[1,2-a]indole-4,7-dione;(1S,2S,9S,9aR)-6-Methyl-7-amino-9-(carbamoyloxymethyl)-9a-methoxy-10-(benzyloxycarbonyl)-1,2-epimino-2,3,9,9a-tetrahydro-1H-pyrrolo[1,2-a]indole-5,8-dione