You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7,8-dimethyl-N-[[(3S)-1-methylpiperidin-3-yl]methyl]-3-(trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H21F3N6
assistant