You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (E)-3-[6-methoxy-3-(4-methoxyphenyl)-7-methyl-1-benzofuran-5-yl]-1-(2-methylpiperidin-1-yl)but-2-en-1-one into molecular formula.
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C27H31NO4
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