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 N-(4,5-dihydro-1,3-thiazol-2-yl)-2-[[5-[1-(4-fluorophenoxy)ethyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]acetamide is given. What is its corresponding molecular formula?
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C21H20FN5O2S2
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