4,6-Diamino-1-(4-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile;4,6-diamino-5-cyano-1-(4-methoxyphenyl)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridin-7-ium
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