You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-(2,3-dihydro-1,4-benzodioxin-3-yl)ethyl]-6-(2-methoxyethylamino)pyridine-3-carboxamide into molecular formula.
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C19H23N3O4
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