You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-ethyl-3,3,3-trifluoro-N-(2-methyl-5-pyridin-3-ylpyrazol-3-yl)propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H15F3N4O
assistant