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-[4-[2-[(2-methylpropan-2-yl)oxy]acetyl]piperazin-1-yl]butanethioamide is given. What is its corresponding molecular formula?
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C14H27N3O2S
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