You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[5-[(4-bromophenyl)methyl-pyridin-2-ylamino]pentyl]-2-[3-(1H-imidazol-5-yl)propyl]guanidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H32BrN7
assistant