AIDS-163751 AIDS163751 PhCH2-O-CO-Asn-(2S,3S)-AHPBA-Pro-NH-sBu {(S)-1-[(1S,2S)-1-Benzyl-3-((S)-2-sec-butylcarbamoyl-pyrrolidin-1-yl)-2-hydroxy-3-oxo-propylcarbamoyl]-2-carbamoyl-ethyl}-carbamic acid benzyl ester