You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (6-nitro-4H-1,3-benzodioxin-8-yl)methyl (2S,4R)-4-hydroxy-1-(2-nitrophenyl)sulfonylpyrrolidine-2-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C20H19N3O11S
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