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 6-chloro-4-[(2,3-dimethoxybenzoyl)amino]-N-(trideuteriomethyl)pyridine-3-carboxamide is given. What is its corresponding molecular formula?
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C16H16ClN3O4
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