You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,11S)-12-(4-fluorobenzoyl)-9-methyl-2-oxa-9,12-diazatricyclo[9.2.1.03,8]tetradeca-3,5,7-trien-10-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H17FN2O3
assistant