You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2,5-dimethyl-N-[(5-methylfuran-2-yl)methyl]-4-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-pyrrole-3-sulfonamide by IUPAC nomenclature, provide its molecular formula.
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C15H18N4O4S
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