You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-methoxy-9-methyl-10-[2-(trifluoromethyl)phenyl]-8-oxa-10,12-diazatricyclo[7.3.1.02,7]trideca-2(7),3,5-trien-11-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H17F3N2O3
assistant