You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 10-(3,4-dimethylphenyl)-4-[(2-methylphenoxy)methyl]-3,5,6,8,10,11-hexazatricyclo[7.3.0.02,6]dodeca-1(9),2,4,7,11-pentaene by IUPAC nomenclature, provide its molecular formula.
user
C22H20N6O
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