6-Amino-5-[[4-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid C??? ??, ??, ??

6-Amino-5-[[4-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid ?? ?? ? ???

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6-Amino-5-[[4-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid ?? ??