You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[4-carboxy-2,6-bis(trifluoromethyl)phenyl]-4,6-bis(trifluoromethyl)cyclohexa-2,4-diene-1,1,2-tricarboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H8F12O8
assistant