Synonyms: Azirino[2',3':3,4]pyrrolo[1,2-a]indole-4,7-dione,8-[[(aminocarbonyl)oxy]methyl]-1,1a,2,8,8a,8b-hexahydro-8a-methoxy-5-methyl-6-[[2-[(4-nitrophenyl)dithio]ethyl]amino]-,(1aS,8R,8aR,8bS)- (9CI); Azirino[2',3':3,4]pyrrolo[1,2-a]indole-4,7-dione,8-[[(aminocarbonyl)oxy]methyl]-1,1a,2,8,8a,8b-hexahydro-8a-methoxy-5-methyl-6-[[2-[(4-nitrophenyl)dithio]ethyl]amino]-,[1aS-(1aa,8b,8aa,8ba)]-; BMS 181174; BMY 25067