2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-((4-(5-((4-hydroxyphenyl)azo)-1H-benzimidazol-2-yl)phenyl)azo)-6-(phenylazo)-

4-Amino-5-hydroxy-3-((4-(5-((4-hydroxyphenyl)azo)-1H-benzimidazol-2-yl)phenyl)azo)-6-(phenylazo)naphthalene-2,7-disulphonic acid;(3E)-5-amino-4-oxo-6-[4-[5-[2-(4-oxo-1-cyclohexa-2,5-dienylidene)hydrazinyl]-3H-benzoimidazol-2-yl]phenyl]diazenyl-3-(phenylhydrazinylidene)naphthalene-2,7-disulfonic acid;2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-((4-(5-((4-hydroxyphenyl)azo)-1H-benzimidazol-2-yl)phenyl)azo)-6-(phenylazo)-