You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-2-amino-N-[(2S,3S,5R)-5-(5-ethyl-2,4-dioxopyrimidin-1-yl)-2-(hydroxymethyl)oxolan-3-yl]propanamide by IUPAC nomenclature, provide its molecular formula.
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C14H22N4O5
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