You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2-benzoyl-4-chloro-1-methylcyclohexa-2,4-dien-1-yl)-1-(diaminomethylidene)guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H18ClN5O
assistant