You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[[4-(trifluoromethyl)phenyl]methoxyiminomethyl]-1-[[4-(trifluoromethyl)phenyl]methyl]indol-5-yl]oxyacetic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H20F6N2O4
assistant