You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2,6-dimethylphenyl) (10E)-13-oxa-2,4,6,8-tetrazatricyclo[12.3.1.13,7]nonadeca-1(18),3(19),4,6,10,14,16-heptaene-8-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H22N4O3
assistant