1-[(2S,3S)-3-({3-(Aminosulfonyl)-N-[(1-naphthyloxy)acetyl]-L-alanyl}amino)-2-hydroxy-4-phenylbutanoyl]-N-(tert-butyl)-L-prolinamide 1Nap-O-CH2CO-Sma-(2S, 3S)-AHPBA-Pro-NH-tBu AIDS-163689 AIDS163689