You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 4-[(5-chloro-3-methyl-2-pyridin-3-ylindol-1-yl)methyl]-2,6-dimethylbenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H25ClN2O2
assistant