(2S,4S,5S)-4-Hydroxy-2-isopropyl-7-methyl-5-(3-methylbutanoylamino)octanoic acid {(1S,2S)-2-methyl-1-[(pyridin-2-ylmethyl)carbamoyl]butyl}-amide AIDS-081480 AIDS081480 IVA-LVA-Ile-Amp