You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [2,4-dichloro-3-[[1,7-dimethyl-5-(trifluoromethyl)indol-2-yl]methyl]phenyl]-morpholin-4-ylmethanone into molecular formula.
user
C23H21Cl2F3N2O2
assistant