You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 9-[(4-fluorophenyl)methyl]-4-oxo-N-(2,2,2-trifluoroethyl)-3,7-dihydrocyclohepta[c][1,7]naphthyridine-11-sulfonamide ?
user
C22H17F4N3O3S
assistant