(2S)-N-(3-{(2S)-2-[N-(tert-Butyl)carbamoyl]pyrrolidinyl}(1S,2R)-2-hydroxy-3-oxo-1-benzylpropyl)-3-carbamoyl-2-[(phenylmethoxy)carbonylamino]propanamide AIDS-059725 AIDS059725 Cbz-Asn-Pns-Pro-NH-tBu N^2-[(Phenylmethoxy)carbonyl]-L-asparaginyl-(2R,3S)-2-hydroxy-4-phenyl-3-aminobutanoyl-N-(1,1-dimethylethyl)-L-prolinamide