You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[3-[4-amino-3-(4-phenoxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]pyrrolidin-1-yl]-4-[cyclobutyl(ethyl)amino]but-2-en-1-one into molecular formula.
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