trisodium 3-[[4-[[[4-[[2-(acetylamino)-4-hydroxyphenyl]azo]phenyl]amino]carbonyl]phenyl]azo]-4-amino-5-hydroxy-6-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate;3-[[4-[[[4-[[2-(Acetylamino)-4-hydroxyphenyl]azo]phenyl]amino]carbonyl]phenyl]azo]-4-amino-5-hydroxy-6-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt
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