(2S)-N-((1S,2S)-3-{(2S,3S)-2-[N-(tert-butyl)carbamoyl]-3-chloropyrrolidinyl}-2-hydroxy-3-oxo-1-benzylpropyl)-3-carbamoyl-2-[(phenylmethoxy)carbonylamino]propanamide AIDS-080395 AIDS080395 Z-Asn-(2S,3S)-AHPBA-[3(S)-chloro]Pro t-butylamine