You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[4-fluoro-2-(trifluoromethyl)phenyl]methyl]-6-piperidin-3-ylsulfanyl-3-propan-2-ylimidazo[1,2-b]pyridazin-8-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H25F4N5S
assistant