4-Amino-5-hydroxy-3-[4-[4-(4-hydroxyphenylazo)phenylaminocarbonyl]phenylazo]-6-phenylazo-2,7-naphthalenedisulfonic acid C??? ??, ??, ??

4-Amino-5-hydroxy-3-[4-[4-(4-hydroxyphenylazo)phenylaminocarbonyl]phenylazo]-6-phenylazo-2,7-naphthalenedisulfonic acid ?? ?? ? ???

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4-Amino-5-hydroxy-3-[4-[4-(4-hydroxyphenylazo)phenylaminocarbonyl]phenylazo]-6-phenylazo-2,7-naphthalenedisulfonic acid ?? ??