You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl 2,4-dimethyl-5-[4-(thiophen-2-ylsulfonylamino)piperidine-1-carbonyl]-1H-pyrrole-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C18H23N3O5S2
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