You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-(3-chloro-N-(4-chlorophenyl)sulfonylanilino)-N-[[4-(pyrrolidin-1-ylmethyl)phenyl]methyl]acetamide into molecular formula.
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C26H27Cl2N3O3S
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