(2E)-N-[2-(N-{2-[N-(3-cyanopropyl)carbamoyl]-1-methylimidazol-4-yl}carbamoyl)-1-methylimidazol-4-yl]-N'-[2-(N-{2-[N-(3-cyanopropyl)carbamoyl]-1-methylimidazol-4-yl}carbamoyl)-1-methylimidazol-4-yl]but-2-ene-1,4-diamide AIDS-004817 AIDS004817 Bis-distamycin