1-[[2-(2-{2-[(2-Benzyl-3-phenyl-propionyl)-methyl-amino]-3-methyl-butyrylamino}-3,3-dimethyl-butyrylamino)-3-carbamoyl-propionylamino]-(1-hydroxymethyl-3,3-dimethyl-butylcarbamoyl)-methyl]-cyclopentanecarboxylic acid AIDS-188200 AIDS188200