You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (Z)-3-(5-bromo-2,4-dimethoxyphenyl)-2-(6-methyl-1H-benzimidazol-2-yl)prop-2-enenitrile .
user
C19H16BrN3O2
assistant