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-[[7-chloro-4-(4-chlorophenyl)-4-methyl-1,3-dioxonaphthalene-2-carbonyl]amino]acetic acid is given. What is its corresponding molecular formula?
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C20H15Cl2NO5
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