, 2,7-Naphthalenedisulfonic acid, 6-[2-(2,4-diaminophenyl)diazenyl]-3-[2-[4-[[4-[2-[7-[2-(2,4-diaminophenyl)diazenyl]-1-hydroxy-3-sulfo-2-naphthalenyl]diazenyl]phenyl]amino]-3-sulfophenyl]diazenyl]-4-hy droxy-, sodium salt (1:2), Sodium 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-2,7-disulphonate
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