You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-cyano-N-[5-[(2,4-dichlorophenyl)methyl]-1,3-thiazol-2-yl]-3-(4-heptoxyphenyl)prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H27Cl2N3O2S
assistant