3(Benzimid-SO2NHBz)-4OH-2Pyranone deriv. AIDS-032558 AIDS032558 N-(3-[Cyclopropyl[4-hydroxy-2-oxo-6-[1(R)-phenylmethyl)propyl]-2H-pyran-3-yl)methyl]phenyl)-benzimidazole-2-sulfonamide