You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (5Z)-2-(2,3-dichlorophenyl)imino-5-[(4-pyrrolidin-1-ylphenyl)methylidene]-1,3-thiazolidin-4-one into its molecular formula.
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C20H17Cl2N3OS
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