5548-83-4 AIDS-030532 AIDS030532 NSC63676 Urea, N,N-[1,4-phenylenebis[N'-[2,5-bis[[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]amino]carbonyl]phenyl]- Urea, N,N-[1,4-phenylenebis[N'-[2,5-bis[[4-(4,5-dihydro- 1H-imidazol-2-yl)phenyl]amino]carbonyl]phenyl]-