You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,7S)-4-(3,4-difluorophenyl)-3,5-dihydroxy-4-azatricyclo[5.2.2.02,6]undeca-2,5-dien-8-one by IUPAC nomenclature, provide its molecular formula.
user
C16H13F2NO3
assistant