You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-methyl-N-(2-pyrrolidin-1-ylethyl)-1-(2,2,2-trifluoroacetyl)piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H24F3N3O2
assistant