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-[[8-chloro-6-(2-fluorophenyl)-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepin-1-yl]methoxy]-N-methylethanamine ?
user
C20H19ClFN5O
assistant