You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-[2-[1-[2-(2-methyl-7-oxo-[1,3]oxazolo[5,4-d]pyrimidin-6-yl)acetyl]piperidin-4-yl]ethyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
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C17H23N5O4
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