2-(2-{[1-(1-{(S)-3-[2-(3-Biphenyl-3-yl-2-tert-butoxycarbonylamino-propanoylamino)-3-carbamoyl-propanoylamino]-2-hydroxy-4-phenyl-butyl}-pyrrolidin-2-yl)-methanoyl]-amino}-3-methyl-pentanoylamino)-3-methyl-butyric acid methyl ester AIDS-043108 AIDS043108 Boc-m-Bipa-Asn-[Phe-CHOHCH2)-Pro]-Ile-Val-OMe