You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule tert-butyl (2S,3R)-3-[4-(1H-benzimidazol-2-yl)piperazine-1-carbonyl]-2-methylpyrrolidine-1-carboxylate ?
user
C22H31N5O3
assistant