(+/-)-1H-Imidazole-4-sulfonic acid, 1-methyl-, 4-[[5,6-dihydro-4-hydroxy-6-[2-(4-hydroxyphenyl)ethyl]-6-(2-methylpropyl)-2-oxo-2H-pyran-3-yl]thio]-5-(1,1-dimethylethyl)-2-methylphenyl ester 263842-95-1 AIDS-089250 AIDS089250