You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-methyl-4-[[5-methyl-2-[4-(trifluoromethyl)phenyl]triazol-4-yl]methoxy]phenoxy]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H18F3N3O4
assistant