NSC75988 Urea, 1,1'-(4-methoxy-m-phenylene)bis[3-[p-(1,4,5,6-tetrahydro-2-pyrimidinyl)phenyl]-, dihydrochloride Urea, N,N''-(4-methoxy-1,3-phenylene)bis[N'-[4-(1,4,5,6-tetrahydro-2-pyrimidinyl)phenyl]-, dihydrochloride