You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[3-(5-bromo-1-benzofuran-2-carbonyl)-2-(4-tert-butylphenyl)-4-hydroxy-5-oxo-2H-pyrrol-1-yl]benzonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H23BrN2O4
assistant