1Nap-CH2-O-CO-Asp(NHNH2)-(2S,3S)-AHPBA-Pro-NH-tBu AIDS-163716 AIDS163716 {(S)-1-[(1S,2S)-1-Benzyl-3-((S)-2-tert-butylcarbamoyl-pyrrolidin-1-yl)-2-hydroxy-3-oxo-propylcarbamoyl]-2-hydrazinocarbonyl-ethyl}-carbamic acid naphthalen-1-ylmethyl ester