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4-[[(5-Methyl-3-oxo-2,4-dihydro-3H-pyrazol)-4-yl]azo]-2-carboxy-5-chlorobenzenesulfonic acid Structure

4-[[(5-Methyl-3-oxo-2,4-dihydro-3H-pyrazol)-4-yl]azo]-2-carboxy-5-chlorobenzenesulfonic acid