You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-[(5Z)-5-[(3-bromo-4-hydroxyphenyl)methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl]-N-phenylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
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C18H13BrN2O4S
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