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 N-[4-(furan-2-yl)-5-pyridin-4-yl-1,3-thiazol-2-yl]-2-oxo-1H-pyridine-4-carboxamide into molecular formula.
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C18H12N4O3S
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