sodium 1-amino-9,10-dihydro-4-[[3-[[(1-methylethyl)amino]carbonyl]phenyl]amino]-9,10-dioxoanthracen-2-sulphonate

1-Amino-4-[[3-[[(1-methylethyl)amino]carbonyl]phenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt