2,5-dimethylphenyl cyclopentanecarboxylate
2,5-dimethylphenyl cyclopentanecarboxylate ??
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2,5-dimethylphenyl cyclopentanecarboxylate C??? ??, ??, ??
2,5-dimethylphenyl cyclopentanecarboxylate ?? ?? ? ???
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2,5-dimethylphenyl cyclopentanecarboxylate ?? ??
???( 1)?? ??