(4R)-3-((2S,3S)-2-Hydroxy-4-phenyl-3-{[(2S)-tetrahydrofuran-2-ylcarbonyl]amino}butanoyl)-5,5-dimethyl-N-[(2R)-tetrahydrofuran-2-ylmethyl]-1,3-thiazolidine-4-carboxamide AIDS-190543 AIDS190543