You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[4-(4-ethynylpyrazol-1-yl)butylamino]-2-(2-hydroxy-6-oxopiperidin-3-yl)isoindole-1,3-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H23N5O4
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