disodium 2,2'-[(9,10-dihydro-9,10-dioxo-1,4-anthrylene)diimino]bis[3-bromo-5-butyltoluene-4-sulphonate]

3,3'-[[(9,10-Dihydro-9,10-dioxoanthracene)-1,4-diyl]diimino]bis(2-bromo-6-butyl-4-methylbenzenesulfonic acid sodium) salt