You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[6-[3-(azetidin-3-yl)-5-(4-fluorophenyl)imidazol-4-yl]imidazo[1,2-b]pyridazin-2-yl]carbamoyl iodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H15FIN7O
assistant