3(Imid-SO2NHBz)-4OH-2Pyranone deriv. AIDS-033634 AIDS033634 N-[3-[[S or R]-Cyclopropyl[4-hydroxy-2-oxo-6-[1(S)-phenylmethyl)propyl]-2H-pyran-3-yl)methyl]phenyl]-1-methyl-1H-imdazole-4-sulfonamide