You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[4-[(1,5-dimethyl-4-oxopyrazolo[3,4-d]pyrimidin-6-yl)amino]oxolan-3-yl]-5,6,7,8-tetrahydrocinnolin-3-one .
user
C19H23N7O3
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