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?? ???? >(4R)-6α-(tert-Butyldiphenylsilyloxymethyl)tetrahydro-2-oxo-2H-pyran-4β-acetic acid methyl ester
(4R)-6α-(tert-Butyldiphenylsilyloxymethyl)tetrahydro-2-oxo-2H-pyran-4β-acetic acid methyl ester
(4R)-6α-(tert-Butyldiphenylsilyloxymethyl)tetrahydro-2-oxo-2H-pyran-4β-acetic acid methyl ester ??
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(4R)-6α-(tert-Butyldiphenylsilyloxymethyl)tetrahydro-2-oxo-2H-pyran-4β-acetic acid methyl ester C??? ??, ??, ??
(4R)-6α-(tert-Butyldiphenylsilyloxymethyl)tetrahydro-2-oxo-2H-pyran-4β-acetic acid methyl ester ?? ?? ? ???
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(4R)-6α-(tert-Butyldiphenylsilyloxymethyl)tetrahydro-2-oxo-2H-pyran-4β-acetic acid methyl ester ?? ??
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