You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-[3-(2-ethylimidazol-1-yl)propyl]-2-(5-methyl-1H-imidazol-4-yl)imidazole using the IUPAC nomenclature.
user
C15H20N6
assistant