You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[1-[3-fluoro-5-(trifluoromethyl)pyridin-2-yl]piperidin-4-yl]-3-pyridin-3-ylthiourea is given. What is its corresponding molecular formula?
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C17H17F4N5S
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