(2S,3S)-3-[N-(Quinoxaline-2-carbonyl)-L-asparaginyl]amino-2-hydroxy-4-phenylbutanoyl-[4(S)-chloro]-L-proline, tert-butylamide (Quinoxaline-2-carbonyl)-L-Asn-(2S,3S)-AHPBA-[4(S)-chloro]-L-Pro tert-butylamide AIDS-080396 AIDS080396