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 (5E)-2-methylsulfanyl-5-[(3-methylsulfonyl-4-phenylquinolin-6-yl)methylidene]-1,3-thiazol-4-one into molecular formula.
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C21H16N2O3S3
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