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 3-[(5R,6S,7R)-6-ethyl-5,7-dimethyl-4-oxaspiro[2.4]heptan-2-yl]-6-hydroxy-1,6-dihydropyrimidin-2-one into molecular formula.
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C14H22N2O3
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