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

1-Amino-4-[[3-[[4-chloro-6-[[4-(sodiooxysulfonyl)phenyl]amino]-1,3,5-triazin-2-yl]amino]-5-(sodiooxysulfonyl)-2,4,6-trimethylphenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt