You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(5-fluoropyridin-3-yl)-N-[2-(1H-indol-3-yl)ethyl]-7-methylsulfonyl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-4-amine into its molecular formula.
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C23H23FN6O2S
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