You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 4-[2-(1H-benzimidazol-2-yl)-5-chlorophenyl]-3-propylcyclohexa-1,5-diene-1-carbonitrile is given. What is its corresponding molecular formula?
user
C23H20ClN3
assistant