2,7-NAPHTHALENEDISULFONIC ACID, 3-((3,3'-DIMETHYL-4'-((4-(((4-METHYLPHENYL)SULFONYL)OXY)PHENYL)AZO)(1,1'-BIPHENYL)-4-YL)AZO)-4-HYDROXY-5-(((4-METHYLPHENYL)SULFONYL)OXY)-
2,7-naphthalenedisulfonic acid, 3-((3,3'-dimethyl-4'-((4-(((4-methylphenyl)sulfonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-4-hydroxy-5-(((4-methylphenyl)sulfonyl)oxy)-