You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-(2-hydroxypropyl)-2-(1,4,6-trimethyl-3-oxo-2H-pyrazolo[3,4-b]pyridin-5-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
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C14H20N4O3
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