You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E)-2-[(4-bromo-2-nitrophenyl)methylidene]-4-[tert-butyl(dimethyl)silyl]oxy-N-(4-chloro-2-iodophenyl)butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H27BrClIN2O4Si
assistant