You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-[[4-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-4-oxobutanoyl]amino]-1-benzofuran-2-carboxylic acid into its molecular formula.
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C20H18N2O5S
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