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 methyl 4-[[1-(3-chloro-4-fluorophenyl)-2-pyrrolidin-1-ylethyl]sulfamoylmethyl]-3-fluorobenzoate is given. What is its corresponding molecular formula?
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C21H23ClF2N2O4S
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