You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[8-[4-(3-hydroxy-3-methylazetidin-1-yl)anilino]imidazo[1,2-a]pyrazin-6-yl]-1,3-dihydroindol-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H22N6O2
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