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sodium 4-[4-[[3-[(ethylanilino)sulphonyl]-4-methylphenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate  Structure

sodium 4-[4-[[3-[(ethylanilino)sulphonyl]-4-methylphenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate