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Translate the chemical IUPAC name ethyl 3-[[5-[[1-[(2,4-dichlorophenyl)methyl]-2-methylindol-3-yl]methylidene]-3-ethyl-4-oxo-1,3-thiazolidin-2-ylidene]amino]benzoate into its molecular formula.
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C31H27Cl2N3O3S
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