You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-1-methylbenzimidazol-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H18Cl2N4O
assistant