You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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3-fluoro-4-[2-[(4-methoxyphenyl)methyl]pyrazolo[3,4-d]pyrimidin-6-yl]piperidine-1-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C19H20FN5O3
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