4-[[5-[[4-[(2-carboxy-4-sulphophenyl)amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid;4-[[5-[[4-[(2-Carboxy-4-sulfophenyl)amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid
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