You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[1-(4-fluorophenyl)pyrrolidin-3-yl]methyl]-1-(thiophene-2-carbonyl)piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H26FN3O2S
assistant