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 2-[[4-ethyl-5-[1-(3-methoxyphenoxy)ethyl]-1,2,4-triazol-3-yl]sulfanyl]-N-(3-fluorophenyl)acetamide into molecular formula.
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C21H23FN4O3S
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