You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[1-[2,4-dichloro-3-[7-methyl-5-(trifluoromethyl)indole-1-carbonyl]benzoyl]piperidin-4-yl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H23Cl2F3N2O4
assistant