(R)-3-((2S,3S)-2-Hydroxy-3-{(R)-3-methanesulfonyl-2-[2-(naphthalen-1-yloxy)-ethanoylamino]-propanoylamino}-4-phenyl-butanoyl)-thiazolidine-4-carboxylic acid (4-hydroxy-cyclohexyl)-amide 1Nap-O-CH2CO-Msa-(2S,3S)-AHPBA-Thz-NH-chex-ol AIDS-163735 AIDS163735