You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 7-fluoro-2-[6-[[methyl-[2-(methylamino)ethyl]amino]methyl]imidazo[1,2-a]pyrazin-2-yl]pyrido[1,2-a]pyrimidin-4-one into its molecular formula.
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C19H20FN7O
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