You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-(2-chloro-5H-pyrrolo[2,3-b]pyrazin-7-yl)-4-[(3-methyl-2-bicyclo[2.2.2]octanyl)methyl]quinazoline ?
user
C24H24ClN5
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