You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 6-fluoro-N-[4-(5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)phenyl]pyridine-3-carboxamide into molecular formula.
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C18H16FN5O
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