2-Amino-3-methyl-butyric acid, (1S,2R)-1-[(2R,4S)-4-(2-amino-3-methyl-butanoyloxy)-2-benzyl-5-((S)-2-tert-butylcarbamoyl-4-pyridin-3-ylmethyl-piperazin-1-yl)-pentanoylamino]-indan-2-yl ester AIDS-093741 AIDS093741