You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (5-methylfuran-2-yl)-[4-(pyrimidin-2-ylamino)-1-oxa-9-azaspiro[5.5]undecan-9-yl]methanone;2,2,2-trifluoroacetic acid into molecular formula.
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C21H25F3N4O5
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