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3-[(4,5-dihydro-5-oxo-1,3-diphenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonic acid Structure

3-[(4,5-dihydro-5-oxo-1,3-diphenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonic acid