You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [6-chloro-1-methyl-2-oxo-4-(trifluoromethyl)-3,1-benzoxazin-4-yl]methyl-(4-fluorophenyl)carbamic acid .
user
C18H13ClF4N2O4
assistant