You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(carboxymethyl)-1-[4-(diethylamino)phenyl]-5-[4-(trifluoromethoxy)phenoxy]indole-3-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H25F3N2O6
assistant