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system
Name the molecular formula for the molecule established as N-[4-[3-chloro-4-(6-methylpyridin-3-yl)oxyanilino]-7-ethoxyquinazolin-6-yl]-2-fluoro-4-piperidin-1-ylbut-2-enamide using the IUPAC nomenclature.
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C31H32ClFN6O3
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