A new and thorough examination or study of a subject that has been previously investigated
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diethyl 2-phenyl-1H-imidazole-4,5-dicarboxylate
Dimethyl 1-hydroxy-4-methyl-1-phenyl-1H-pyrrolo<2,1-c>-1,4-thiazine-7,8-dicarboxylate
3-O-p-methoxybenzyl-1,2-O-isopropylidene-α-L-sorbofuranose
