You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 6-methyl-4-oxo-N-[2-(triazol-1-yl)phenyl]-1-[2-(trifluoromethyl)phenyl]pyridazine-3-carboxamide .
user
C21H15F3N6O2
assistant