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4-[(5-cyano-1,6-dihydro-2-hydroxy-1,4-dimethyl-6-oxopyridin-3-yl)azo]benzoic acid  Structure

4-[(5-cyano-1,6-dihydro-2-hydroxy-1,4-dimethyl-6-oxopyridin-3-yl)azo]benzoic acid