You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-(6,7-dihydro-4H-pyrano[4,3-d][1,3]thiazol-2-yl)-1-methyl-2-oxopyridine-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C13H13N3O3S
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