You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-methyl-9-(pyridin-2-ylmethyl)-3,11-dioxa-9-azatetracyclo[11.4.0.02,6.07,12]heptadeca-1(17),2(6),4,7(12),13,15-hexaen-5-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H20N2O3
assistant