disodium 3-[[4-amino-9,10-dihydro-9,10-dioxo-3-[2-sulphonato-4-(1,1,3,3-tetramethylbutyl)phenoxy]-1-anthryl]amino]-2,4,6-trimethylbenzenesulphonate

3-[[[4-Amino-9,10-dihydro-9,10-dioxo-3-[2-sulfo-4-(1,1,3,3-tetramethylbutyl)phenoxy]anthracen]-1-yl]amino]-2,4,6-trimethylbenzenesulfonic acid disodium salt