(S)-4-Hydroxy-1-((2S,3S)-2-hydroxy-3-{(R)-3-methanesulfonyl-2-[2-(naphthalen-1-yloxy)-ethanoylamino]-propanoylamino}-4-phenyl-butanoyl)-pyrrolidine-2-carboxylic acid tert-butylamide 1Nap-O-CH2CO-Msa-(2S,3S)-AHPBA-Hyp-NH-tBu AIDS-163727 AIDS163727