AIDS-163676 AIDS163676 PhCH2-O-CO-Asn-(2S, 3S)-AHPBA-(D)-Pip-NH-tBu {(S)-1-[(1S,2S)-1-Benzyl-3-((2R,4S)-2-tert-butylcarbamoyl-4-hydroxy-piperidin-1-yl)-2-hydroxy-3-oxo-propylcarbamoyl]-2-carbamoyl-ethyl}-carbamic acid benzyl ester