68772-00-9 NSC109290 Pyrimidinium, 2,4-diamino-5-[4-[[3-[4-[[[4-(2,4-diamino-1-ethylpyrimidinium-5-yl)phenyl]amino]carbonyl]phenyl]-1-oxo-2-propenyl]amino]phenyl]-1-ethyl-, salt with 4-methylbenzenesulfonic acid (1:2)