You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (4Z)-4-[(5-bromo-2-methoxyphenyl)methylidene]-2-methyl-5-oxo-1-[(1R)-1-phenylethyl]pyrrole-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H22BrNO4
assistant