You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(4-fluorophenyl)methylideneamino]-[(Z)-N-[(3-fluorophenyl)methylideneamino]-N'-[(4-fluorophenyl)methylideneamino]carbamimidoyl]azanium;iodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H18F3IN6
assistant