You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name N-[2-[6-[(3-chloro-4-fluorophenyl)methylamino]-3-oxo-2-pyridin-3-ylpyrido[2,3-b]pyrazin-4-yl]ethyl]acetamide into its molecular formula.
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C23H20ClFN6O2
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