2-[2-({1-[1-((S)-3-{2-[2-tert-Butoxycarbonylamino-3-(4-hydroxy-3,5-diiodo-phenyl)-propanoylamino]-3-carbamoyl-propanoylamino}-2-hydroxy-4-phenyl-butyl)-pyrrolidin-2-yl]-methanoyl}-amino)-3-methyl-pentanoylamino]-3-methyl-butyric acid methyl ester AIDS-043109 AIDS043109 Boc-Tyr(I^2)-Asn-[Phe-CHOHCH2)-Pro]-Ile-Val-OMe