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 3-(6,8-dihydro-5H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl)-1-(4-methylphenyl)propan-1-amine ?
user
C15H21N5
assistant