(4R)-4-(N-{(1S)-1-[N-((1S)-2-{(2S,4R)-2-[N-(1-Ethyl-3,3,3-trifluoro-2-oxopropyl)carbamoyl]-4-(phenylmethoxy)pyrrolidinyl}-1-(methylethyl)-2-oxoethyl)carbamoyl]-2-methylbutyl}carbamoyl)-4-[(2S)-2-(acetylamino)-3-carboxypropanoylamino]butanoic acid AIDS-162018 AIDS162018