You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3,5-bis(trifluoromethyl)phenyl]-4-(2-methyl-6-pyrazol-1-ylpyrimidin-4-yl)piperazine-1-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H19F6N7O
assistant