You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-chloro-N-[(Z)-[(1R,4R)-1,7,7-trimethyl-2-bicyclo[2.2.1]heptanylidene]amino]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H21ClN2O
assistant