You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 4-chloro-N-[5-chloro-2-(pyridine-2-carbonyl)pyridin-3-yl]-3-(trifluoromethyl)benzenesulfonamide into molecular formula.
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C18H10Cl2F3N3O3S
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