1-[[2-(2-{2-[(2-Benzyl-3-phenyl-propionyl)-methyl-amino]-3-methyl-butyrylamino}-3-methyl-butyrylamino)-4-oxo-4-pyrrolidin-1-yl-butyrylamino]-(1-hydroxymethyl-3,3-dimethyl-butylcarbamoyl)-methyl]-cyclopentanecarboxylic acid AIDS-188201 AIDS188201