197915-43-8 2H-Pyran-2-one, 3-[[2-(1,1-dimethylethyl)-4-(hydroxymethyl)-5-methylphenyl]thio]-5,6-dihydro-4-hydroxy-6-(4-hydroxyphenyl)-6-[2-(4-hydroxyphenyl)ethyl]- 4-Hydroxy-5,6-dihydropyrone deriv. AIDS-056994 AIDS056994