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 1-O-(3,5-dimethylphenyl) 4-O-(2,4,6-trichlorophenyl) (E)-but-2-enedioate is given. What is its corresponding molecular formula?
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C18H13Cl3O4
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