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 2,5-dichloro-N-[2-(diethylamino)ethyl]-N-(4-methoxy-7-methyl-1,3-benzothiazol-2-yl)benzamide into molecular formula.
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C22H25Cl2N3O2S
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