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4,4'-[Methylenebis[4,1-phenyleneazo[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole)-4,1-diyl]]]bis(3-methylbenzenesulfonic acid) Structure

4,4'-[Methylenebis[4,1-phenyleneazo[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole)-4,1-diyl]]]bis(3-methylbenzenesulfonic acid)