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 1-ethyl-3-[(2,3,4,5-tetrafluorophenyl)methyl]-5,8-dioxa-1-azaspiro[3.4]octane-6,7-dione is given. What is its corresponding molecular formula?
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C14H11F4NO4
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