You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 7-(benzylamino)-3-(2-fluoro-6-methylphenyl)-1-piperidin-4-yl-4H-pyrido[4,3-d]pyrimidin-2-one into molecular formula.
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C26H28FN5O
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