197915-30-3 2H-Pyran-2-one, 3-[[2-(1,1-dimethylethyl)-5-methylphenyl]thio]-5,6-dihydro-4-hydroxy-6-[2-(4-hydroxyphenyl)ethyl]-6-phenyl- 4-Hydroxy-5,6-dihydropyrone deriv. AIDS-056981 AIDS056981