You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopropyl-4-[[N'-methyl-N-[3-(2-methylbenzimidazol-1-yl)propyl]carbamimidoyl]amino]butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H30N6O
assistant