You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2,2,2-trifluoro-1-spiro[11-oxa-3-azatricyclo[6.2.1.01,6]undec-9-ene-4,1'-cycloheptane]-3-ylethanone by IUPAC nomenclature, provide its molecular formula.
user
C17H22F3NO2
assistant