You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-[(E)-(5,7-dimethyl-3,4-dihydro-2H-naphthalen-1-ylidene)amino]-5-(trifluoromethyl)pyridin-2-amine ?
user
C18H18F3N3
assistant