8-Amino-5-[4-[4-(4,6-dichloro-1,3,5-triazin-2-ylamino)-2-sulfophenylazo]phenylamino]-9,10-dihydro-9,10-dioxo-1,7-anthracenedisulfonic acid

8-amino-5-[[4-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphophenyl]azo]phenyl]amino]-9,10-dihydro-9,10-dioxoanthracene-1,7-disulphonic acid