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 2-[[5-[1-(2,4-difluorophenoxy)ethyl]-4-methyl-1,2,4-triazol-3-yl]sulfanyl]-N-(2,3-dimethylphenyl)acetamide is given. What is its corresponding molecular formula?
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C21H22F2N4O2S
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