(2R,3R,4S,6S)-3,4-Dihydroxy-6-[(S)-3-(3H-imidazol-4-yl)-2-(2-phenoxy-ethanoylamino)-propanoylamino]-2-isopropyl-8-methyl-5-oxo-nonanoic acid (3-methyl-butyl)-amide AIDS-052066 AIDS052066 Poa-His-Leu-[CH(OH)CH(OH)]-Val-Mba