7-anilino-3-[[4-[(4-chloro-2-sulphophenyl)azo]-2-methoxy-6-sulphonaphthyl]azo]-4-hydroxynaphthalene-2-sulphonic acid

3-[[4-[(4-Chloro-2-sulfophenyl)azo]-2-methoxy-6-sulfonaphthalen-1-yl]azo]-4-hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid