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-(3,4-dimethylphenoxy)-N-[6-(4-methylphenyl)-[1,3]thiazolo[3,2-b][1,2,4]triazol-2-yl]acetamide is given. What is its corresponding molecular formula?
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C21H20N4O2S
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