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 8-[[3,3-difluoro-1-(2-methylpropyl)piperidin-4-yl]methyl]-3-ethyl-8-azaspiro[4.5]decane;ethane is given. What is its corresponding molecular formula?
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C25H50F2N2
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