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 5-(5-ethylsulfonyl-2-fluorophenyl)-1-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-one is given. What is its corresponding molecular formula?
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C16H15F4NO4S
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