You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N'-[5-chloro-2-[(3,4-dichlorophenyl)carbamoyl]indol-1-yl]-N-(3-fluorophenyl)oxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H14Cl3FN4O3
assistant