3PhS-6Ph-2-Pyranone, 6-alkylamide deriv. 4-{4-Hydroxy-5-[(2-isopropylphenyl)thio]-6-oxo-2-phenyl-3,6-dihydro-2H-pyran-2-yl}-N-(2-phenylethyl)butanamide AIDS-032659 AIDS032659