Furo2,3-bfuran-3,4-dicarboxylic acid, 2,3,3a,6a-tetrahydro-2-oxo-5,6a-diphenyl-, dimethyl ester, (3.alpha.,3a.alpha.,6a.alpha.)-
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Furo2,3-bfuran-3,4-dicarboxylic acid, 2,3,3a,6a-tetrahydro-2-oxo-5,6a-diphenyl-, dimethyl ester, (3.alpha.,3a.alpha.,6a.alpha.)-
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2'-羟基-2-苯基苯乙酮
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