2-[3-(4-Butyramido-1-methyl-2-pyrrolyl)-1-oxo- 2-propenyl]-7-methylcyclopropa[c]pyrrolo[3,2-e]indol-4-one ANTINEOPLASTIC-690267 Cyclopropa[c]pyrrolo[3,2-e]indol-4-one, 2-[3-(4-butyramido-1-methyl-1H-2-pyrrolyl)-1-oxo-2-propenyl]-7-methyl- NSC690267