You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-methyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-ol;2,2,2-trifluoroacetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H18F3NO2
assistant