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-(4,7-dimethyl-1,3-benzothiazol-2-yl)-2,6-dimethoxy-N-(pyridin-3-ylmethyl)pyrimidine-4-carboxamide is given. What is its corresponding molecular formula?
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C22H21N5O3S
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