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 (3S,7R)-7-(2-fluorophenyl)-3-hydroxy-3-(3-methoxyphenyl)-5-oxo-6,7-dihydro-2H-[1,3]thiazolo[3,2-a]pyridine-8-carbonitrile into molecular formula.
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C21H17FN2O3S
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