6-((2,4-Diaminophenyl)azo)-3-((4-((4-((7-((2,4-diaminophenyl)azo)-1-hydroxy-3-sulpho-2-naphthyl)azo)phenyl)amino)-3-sulphophenyl)azo)-4-hydroxynaphthalene-2-sulphonic acid;(3E)-6-[(E)-(2,4-diaminophenyl)diazenyl]-3-{[4-({4-[(2E)-2-{7-[(E)-(2,4-diaminophenyl)diazenyl]-1-oxo-3-sulfonaphthalen-2(1H)-ylidene}hydrazino]phenyl}amino)-3-sulfophenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2-sulfonic acid
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