(2-Ethyl-3-hydroxy)benzoyl-(2S,3S)-AHPBA-4(S)-Cl-Pro-NH-t-Bu AHPBA deriv. AIDS-059683 AIDS059683 N-((1S,2S)-3-{(2S,4S)-2-[N-(tert-Butyl)carbamoyl]-4-chloropyrrolidinyl}-2-hydroxy-3-oxo-1-benzylpropyl)(2-ethyl-3-hydroxyphenyl)carboxamide