3,4-Dihydro-1H-isoquinoline-2-carboxylic acid, 5-[1-(2-azetidin-1-yl-2-oxo-acetyl)-butylcarbamoyl]-1-(3-methyl-2-{3-methyl-2-[(pyrazine-2-carbonyl)-amino]-butyrylamino}-butyryl)-pyrrolidin-3-yl ester AIDS-167297 AIDS167297