4H-pyran-4-one, 5-[[2-(1,1-dimethylethyl)-5-methylphenyl]thio]-2,3-dihydro-6-hydroxy-2-[2-(4-hydroxyphenyl)ethyl]-2-phenyl-;5-[(2-tert-butyl-5-methylphenyl)sulfanyl]-6-hydroxy-2-[2-(4-hydroxyphenyl)ethyl]-2-phenyl-2,3-dihydro-4H-pyran-4-one
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