1-((2S,3S)-4-Cyclohexyl-2-hydroxy-3-{[N2-(pyrazin-2-ylcarbonyl)-L-asparaginyl]amino}butanoyl)-L-prolyl-L-alloisoleucyl-L-valinamide AIDS-163664 AIDS163664 Pyrazine-CO-Asn-(2S, 3S)-AHPBA-Pro-Ile-Val-NH2