NSC218441 Quinolinium, 6-amino-4-[[3-amino-4-[[[4-[(1-methylpyridinium-4-yl)amino]phenyl]amino]carbonyl]phenyl]amino]-1-methyl-, bis(methyl sulfate) Quinolinium, 6-amino-4-[[3-amino-4-[[[4-[(1-methylpyridinium-4-yl)amino]phenyl]amino]carbonyl]phenyl]amino]-1-methyl-, dimethanesulfonate