2-(3-Methyl-2-{3-methyl-2-[(pyrazine-2-carbonyl)-amino]-butyrylamino}-butyryl)-1,2,3,3a,6,6a-hexahydro-cyclopenta[c]pyrrole-1-carboxylic acid (1-sec-butylaminooxalyl-propyl)-amide AIDS-211012 AIDS211012