You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-[(3-chloro-2-fluorophenyl)methyl]-3-hydroxy-2-(2H-tetrazole-5-carbonyl)pyrido[1,2-a]pyrimidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H10ClFN6O3
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