(4R)-3-((2S,3S)-2-Hydroxy-4-phenyl-3-{[(1H-1,2,4-triazol-3-ylthio)acetyl]amino}butanoyl)-5,5-dimethyl-N-(2-thienylmethyl)-1,3-thiazolidine-4-carboxamide AIDS-190544 AIDS190544