You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(2-chloro-4-phenylphenyl)methyl]-N-(hexylsulfamoyl)-2-methylbenzimidazole-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H31ClN4O3S
assistant