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 N-[2-(6-methylpyridin-2-yl)ethyl]-5-(trifluoromethyl)-9-oxa-2-azaspiro[5.5]undecane-2-carboxamide is given. What is its corresponding molecular formula?
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C19H26F3N3O2
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