You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-butyl-6-[3-(4-butylpiperazin-1-yl)propoxy]-2-[4-[2-(4-chlorophenyl)ethoxy]phenyl]benzimidazole .
user
C36H47ClN4O2
assistant