You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[1-[(3,5-dimethylphenyl)methyl]-3-hydroxypyrrolidin-3-yl]-2,2-difluoroacetamide by IUPAC nomenclature, provide its molecular formula.
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C15H20F2N2O2
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