You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-[1-[2-[benzyl(propan-2-yl)amino]-2-oxoethyl]benzimidazol-2-yl]propyl]-3-chlorobenzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H31ClN4O2
assistant