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 (2R,4S,5R)-2-(5-chloropyridin-3-yl)sulfanyl-4-[4-(3,5-difluoro-4-methylphenyl)pyrazol-1-yl]-6-(hydroxymethyl)oxane-3,5-diol is given. What is its corresponding molecular formula?
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C21H20ClF2N3O4S
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