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4-[[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol)-4-yl]azo]benzenesulfonic acid Structure

4-[[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol)-4-yl]azo]benzenesulfonic acid