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 5-(1,3-benzothiazol-2-yl)-N-[4-(3,4-dichlorophenyl)-1,3-thiazol-2-yl]thiophene-2-carboxamide is given. What is its corresponding molecular formula?
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C21H11Cl2N3OS3
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