You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(5-ethyl-4-methyl-6-oxo-1H-pyrimidin-2-yl)-5-methylpyrazol-3-yl]-2-(trifluoromethyl)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H18F3N5O2
assistant