2-(3-{[4,4-Difluoro-2-(3-methyl-2-{3-methyl-2-[(pyrazine-2-carbonyl)-amino]-butyrylamino}-butyryl)-octahydro-cyclopenta[c]pyrrole-1-carbonyl]-amino}-2-oxo-pentanoylamino)-3-phenyl-propionic acid AIDS-211003 AIDS211003