You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[1-[3-(cyanomethyl)azetidin-3-yl]pyrazol-4-yl]-1-(2-trimethylsilylethoxymethyl)pyrrolo[2,3-b]pyridine-5-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H27N7OSi
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