(S)-1-{1-[(R)-3-((2S,3S)-2-Hydroxy-3-{(R)-3-methanesulfonyl-2-[2-(naphthalen-1-yloxy)-ethanoylamino]-propanoylamino}-4-phenyl-butanoyl)-thiazolidin-4-yl]-methanoyl}-piperidine-2-carboxylic acid methyl ester 1Nap-O-CH2CO-Msa-(2S,3S)-AHPBA-Thz-Pip-OMe AIDS-163736 AIDS163736