You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2,4-difluorobenzoyl)-N-[(2S)-2-methyl-3-pyrazol-1-ylpropyl]piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H24F2N4O2
assistant