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?? ???? >2-[[4-Oxo-6-[(E)-1-propenyl]-4H-pyran-3-yl]carbonyl]-3,5-dimethoxybenzoic acid methyl ester
2-[[4-Oxo-6-[(E)-1-propenyl]-4H-pyran-3-yl]carbonyl]-3,5-dimethoxybenzoic acid methyl ester
2-[[4-Oxo-6-[(E)-1-propenyl]-4H-pyran-3-yl]carbonyl]-3,5-dimethoxybenzoic acid methyl ester ??
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2-[[4-Oxo-6-[(E)-1-propenyl]-4H-pyran-3-yl]carbonyl]-3,5-dimethoxybenzoic acid methyl ester C??? ??, ??, ??
2-[[4-Oxo-6-[(E)-1-propenyl]-4H-pyran-3-yl]carbonyl]-3,5-dimethoxybenzoic acid methyl ester ?? ?? ? ???
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2-[[4-Oxo-6-[(E)-1-propenyl]-4H-pyran-3-yl]carbonyl]-3,5-dimethoxybenzoic acid methyl ester ?? ??
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