You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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1-(3,5-dichlorobenzoyl)-N-(5-thiophen-3-yl-1,3,4-thiadiazol-2-yl)pyrrolidine-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C18H14Cl2N4O2S2
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