AIDS-163656 AIDS163656 N-[(2R,3S)-3-({N-[(Benzyloxy)carbonyl]-L-valyl}amino)-2-hydroxy-4-phenylbutanoyl]-N-isobutyl-L-phenylalaninamide PhCH2-O-CO-Val-(2R, 3S)-AHPBA-Phe-NH-iBu