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 2-[2-(3-fluorophenyl)ethylamino]-6-pyridin-3-yl-8H-pyrimido[4,5-d]pyrimidine-5,7-dione into its molecular formula.
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C19H15FN6O2
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