You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-3-methoxy-5-[(E)-2-(3-methoxy-4-methylphenyl)ethenyl]benzene into molecular formula.
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C27H28O4
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