You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-[3-(1,1-difluoroethoxy)phenyl]-N-[(1-methylpiperidin-4-yl)methyl]imidazo[1,2-b]pyridazin-6-amine ?
user
C21H25F2N5O
assistant