1-[(2-{2-[2-(2-Benzyl-3-phenyl-propionylamino)-3-methyl-butyrylamino]-3,3-dimethyl-butyrylamino}-4-oxo-4-pyrrolidin-1-yl-butyrylamino)-(1-hydroxymethyl-3,3-dimethyl-butylcarbamoyl)-methyl]-cyclopentanecarboxylic acid AIDS-188202 AIDS188202