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 4-[[1-(3-methyl-2,3-dihydro-1-benzofuran-2-yl)ethylcarbamoylamino]methyl]benzoic acid is given. What is its corresponding molecular formula?
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C20H22N2O4
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