You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-[methyl-[[(6S)-5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-6-yl]methyl]amino]pyrazine-2-carbonitrile .
user
C14H16N6
assistant