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organic compounds
The title compound, [1aS]-6-amino-1,1a,2,4,7,8,8a,8b-octahydro-8a-hydroxy- 1,5-dimethyl-4,7-dioxoazirino[2',3':3,4]pyrrolo[1,2-a]indol-7-ylmethyl, is a mitomycin derivative, mitomycins being antitumor antibiotics. The O atoms of the quinone ring deviate significantly from the least-squares plane of the quinone ring.