You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 7-[(2-chloro-6-fluorophenyl)methyl]-3-ethyl-8-piperidin-1-yl-1-propan-2-ylpurine-2,6-dione into its molecular formula.
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C22H27ClFN5O2
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