You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[6-(6,8-dihydro-5H-imidazo[1,2-a]pyrazin-7-yl)-5-methylpyridin-3-yl]propan-2-amine .
user
C15H21N5
assistant