8-((3,3'-dimethyl-4'-((4-(((4-methylphenyl)sulfonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-7-hydroxy-1,3-naphthalenedisulfonic acid disodium salt
8-((3,3'-dimethyl-4'-((4-(((4-methylphenyl)sulfonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-7-hydroxy-1,3-naphthalenedisulfonic acid disodium salt