7-Benzoylamino-4-hydroxy-3-[4-(4-sulfophenylazo)phenylazo]-2-naphthalenesulfonic acid

7-benzamido-4-hydroxy-3-[[4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic acid

7-Benzoylamino-4-hydroxy-3-[[4-[(4-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid