Naphthalenesulfonic acid, 5-2,4-dihydroxy-5-4-(4-nitro-2-sulfophenyl)aminophenylazophenylazo-8-4-(4-nitro-2-sulfophenyl)aminophenylazo-, trisodium salt

trisodium 5-[[2,4-dihydroxy-5-[[4-[(4-nitro-2-sulphonatophenyl)amino]phenyl]azo]phenyl]azo]-8-[[4-[(4-nitro-2-sulphonatophenyl)amino]phenyl]azo]naphthalenesulphonate

5-[2,4-Dihydroxy-5-[4-[4-nitro-2-(sodiosulfo)phenylamino]phenylazo]phenylazo]-8-[4-[4-nitro-2-(sodiosulfo)phenylamino]phenylazo]-1-naphthalenesulfonic acid sodium salt