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-[2-(dimethylamino)ethyl]-3,4-difluoro-2-[(2-fluoro-4-iodoanilino)methyl]benzamide is given. What is its corresponding molecular formula?
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C18H19F3IN3O
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