5-Cyano-N-[3-[1-(5,6,7,8,9,10-hexahydro-4-hydroxy-2-oxo-2(5H)-cycloocta[b]pyran-3-yl)propyl]phenyl]-2-pyridinesulfonamide AIDS-033321 AIDS033321 Benzylcyclooctapyran-2-one deriv.