NSC72581 Urea, 1,1',1''-s-phenenyltris[3-(p-2-imidazolin-2-ylphenyl)-, trihydrochloride Urea, N,N'',N''''-1,3,5-benzenetriyltris[N'-[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]-, trihydrochloride