You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2-[[3-(2,2-difluoro-3-pyrrolidin-1-ylpropoxy)phenyl]methyl]-4-ethylpyrimidine is given. What is its corresponding molecular formula?
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C20H25F2N3O
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