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-methoxyphenyl)-1,3-thiazol-4-yl]methyl]piperazin-1-yl]-(5-methylfuran-2-yl)methanone is given. What is its corresponding molecular formula?
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C21H23N3O3S
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