You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-(4,4-difluorocyclohexyl)-6-[2-[(3,3,4,4-tetrafluoropyrrolidin-1-yl)methyl]cyclobutyl]-5H-pyrazolo[3,4-d]pyrimidin-4-one .
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C20H23F6N5O
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