1-[[2-(2-{2-[(2-Benzyl-4-phenyl-butyryl)-methyl-amino]-3-methyl-butyrylamino}-3,3-dimethyl-butyrylamino)-4-oxo-4-pyrrolidin-1-yl-butyrylamino]-(1-ethyl-2,2-dimethyl-propylcarbamoyl)-methyl]-cyclopentanecarboxylic acid AIDS-191725 AIDS191725 BILD 1357