1-Amino-4-[[3-[[4-chloro-6-[(2-methyl-4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-sulfophenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid trisodium salt

trisodium 1-amino-4-[[3-[[4-chloro-6-[(2-methyl-4-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-sulphonatophenyl]amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate