(2R,3S)-3-(N-Benzyloxycarbonyl-L-asparaginyl)amino-2-hydroxy-4-phenylbutyryl-L-prolyl-L-isoleucyl-L-valine methyl ester AIDS-059180 AIDS059180 Z-Asn-(2R,3S)-AHPBA-Pro-Ile-Val-OMe Z-Asn-Phe-psi [(R)-CH(OH)C(O)N]Pro-Ile-Val-OMe