You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule ethyl 4-[(E)-3-(6-methoxy-3,7-dimethyl-1-benzofuran-5-yl)but-2-enoyl]piperazine-1-carboxylate into molecular formula.
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C22H28N2O5
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