NSC75992 Urea, 3-[m-(1,4,5,6-tetrahydro-2-pyrimidinyl)phenyl]-3'-[p-(1,4,5,6-tetrahydro-2-pyrimidinyl)phenyl]-1,1'-p-phenylenedi-, dihydrochloride Urea, N-[3-(1,4,5,6-tetrahydro-2-pyrimidinyl)phenyl]-N'-[4-[[[[4-(1,4,5,6-tetrahydro-2-pyrimidinyl)phenyl]amino]carbonyl]amino]phenyl]-, dihydrochloride