38801-09-1 Benzoic acid, 4-((1-hydroxy-6-((((5-hydroxy-6-((2-methyl-4-sulfophenyl)azo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-sulfo-2-naphthalenyl)azo)-, compd. with 2,2',2''-nitrilotris(ethanol) (1:4)