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 4-(2,4-dichlorophenoxy)-N-[2-(4-methyl-1,3-thiazol-2-yl)ethyl]butanamide is given. What is its corresponding molecular formula?
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C16H18Cl2N2O2S
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