You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[1-butyl-5-(dimethylsulfamoyl)benzimidazol-2-yl]-N-(3-propan-2-yloxypropyl)propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H36N4O4S
assistant