(4R)-4-(N-{(1S)-1-[N-((1S)-2-{(2S,4R)-4-(Phenylmethoxy)-2-[N-(4,4,4-trifluoro-2-oxo-1-propylbutyl)carbamoyl]pyrrolidinyl}-1-(methylethyl)-2-oxoethyl)carbamoyl]-2-methylbutyl}carbamoyl)-4-[(2S)-2-(acetylamino)-3-carboxypropanoylamino]butanoic acid AIDS-162019 AIDS162019