(R or S)-N-[3-[1-(4-Hydroxy-2-oxo-6,6-dipropyl-5,6-dihydro-2H-pyran-3-yl)-cyclopropylmethyl]-phenyl]-1-methyl-1H-imidazole-4-sulfonamide 4-Hydroxy-5,6-dihydropyranone deriv. AIDS-059104 AIDS059104