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-methylpropyl 2-[3-oxo-1-[2-[3-(2-phenoxyethoxy)anilino]acetyl]piperazin-2-yl]acetate is given. What is its corresponding molecular formula?
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C26H33N3O6
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