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-(2,4-dichlorophenyl)-2-[4-(3,4-dimethoxyphenyl)-1,3-thiazol-2-yl]prop-2-enenitrile .
user
C20H14Cl2N2O2S
assistant