You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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4-[(E)-[4-oxo-3-[(1S)-1-phenylethyl]-2-phenylimino-1,3-thiazolidin-5-ylidene]methyl]benzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C25H20N2O3S
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