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 (5Z)-5-[(4-hydroxy-3-methoxyphenyl)methylidene]-2-(4-hydroxyphenyl)imino-3-methyl-1,3-thiazolidin-4-one into molecular formula.
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C18H16N2O4S
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