4-Amino-3-((4-((2,4-diaminophenyl)azo)phenyl)azo)-5-hydroxy-6-((4-sulphophenyl)azo)naphthalene-2,7-disulphonic acid;(3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-4-oxo-3-[(4-sulfophenyl)hydrazono]-3,4-dihydronaphthalene-2,7-disulfonic acid
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