You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-2-[(5Z)-5-[[3-(3,4-dichlorophenoxy)phenyl]methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-3-phenylpropanoic acid by IUPAC nomenclature, provide its molecular formula.
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C25H17Cl2NO4S2
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