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-[3-(4,5-dimethyl-1H-imidazol-2-yl)phenyl]-3-oxo-2H-[1,2,4]triazolo[4,3-a]pyridine-8-carboxamide into molecular formula.
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C18H16N6O2
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