You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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6-chloro-7-fluoro-2-[5-(1-fluoro-2-methoxyethyl)-1H-1,2,4-triazol-3-yl]-5-methoxy-1-methyl-3-(1H-pyrazol-4-yl)indole is the IUPAC name of a molecule. Please give its molecular formula.
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C18H17ClF2N6O2
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