You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (5E)-5-[(4-ethoxyphenyl)methylidene]-2-(2-hydroxyphenyl)imino-1,3-thiazolidin-4-one is given. What is its corresponding molecular formula?
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C18H16N2O3S
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