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,N,2-trimethyl-3-propan-2-yl-5-(1,3-thiazol-2-ylmethyl)spiro[4,6-dihydroimidazo[4,5-c]pyridine-7,4'-piperidine]-1'-carboxamide is given. What is its corresponding molecular formula?
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C21H32N6OS
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