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 N-[[(7S)-5-(pyridin-3-ylmethyl)-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-7-yl]methyl]methanesulfonamide ?
user
C14H19N5O2S
assistant