1H-pyrrolo[2,3-b]pyridine, 4-nitro-, 7-oxide 4-nitro-1H-pyrrolo[2,3-b]pyridine 7-oxide InChI=1/C7H5N3O3/c11-9-4-2-6(10(12)13)5-1-3-8-7(5)9/h1-4,8