(2-Methyl-3-fluoro)benzoyl-(2S,3S)-AHPBA-4(S)-Cl-Pro-NH-t-Bu AHPBA deriv. AIDS-059681 AIDS059681 N-((1S,2S)-3-{(2S,4S)-2-[N-(tert-butyl)carbamoyl]-4-chloropyrrolidinyl}-2-hydroxy-3-oxo-1-benzylpropyl)(3-fluoro-2-methylphenyl)carboxamide