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 (3S,4R)-3-[[[1-(azepan-1-yl)-2-methylpropan-2-yl]amino]methyl]-1-(benzenesulfonyl)pyrrolidine-3,4-diol is given. What is its corresponding molecular formula?
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C21H35N3O4S
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