You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-(3-chloro-4-fluorophenyl)-2-[[2-[(3R)-3-methylpiperidin-1-yl]-[1,3]thiazolo[4,5-d]pyrimidin-7-yl]sulfanyl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C19H19ClFN5OS2
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