(2S,4S,5S)-6-Cyclohexyl-5-(3,3-dimethyl-butanoylamino)-4-hydroxy-2-isopropylhexanoic acid {(1S,2S)-2-methyl-1-[(pyridin-2-ylmethyl)-carbamoyl]butyl}-amide AIDS-081469 AIDS081469 TBA-CVA-Ile-Amp