You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N,N-dimethyl-6-(2-methyl-3-phenyl-4,5,7,8-tetrahydropyrazolo[3,4-d]azepin-6-yl)pyrazine-2-carboxamide .
user
C21H24N6O
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