(S)-2-{(S)-2-[(1-{(S)-1-[(S)-3-(2,6-Difluorophenyl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-propanoyl]-pyrrolidin-2-yl}-methanoyl)-amino]-3-methyl-butanoylamino}-3-methyl-butyric acid methyl ester AIDS-082168 AIDS082168 Fmoc-Phe(F,F)o,o-Pro-OMe