(R)-3-((2S,3S)-3-{(S)-2-[2-(3-Dimethylamino-phenoxy)-ethanoylamino]-3-methyl-butanoylamino}-2-hydroxy-4-phenyl-butanoyl)-5,5-dimethyl-thiazolidine-4-carboxylic acid 2-methyl-benzylamide AIDS-190934 AIDS190934