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 N-(3-carbamoyl-4,5-dimethylthiophen-2-yl)-1-[4-cyano-2-(furan-2-yl)-1,3-oxazol-5-yl]piperidine-4-carboxamide is given. What is its corresponding molecular formula?
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C21H21N5O4S
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