You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[4-(5-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]-2-([1,2,4]triazolo[4,3-a]pyridin-3-ylsulfanyl)ethanone by IUPAC nomenclature, provide its molecular formula.
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C20H18FN5O2S
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