You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[(E)-2-[4-(4-tert-butylphenyl)phenyl]ethenyl]-5-(2,4-dichlorophenyl)-1H-imidazole by IUPAC nomenclature, provide its molecular formula.
user
C27H24Cl2N2
assistant