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 2-(piperidin-1-ylmethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepine-3-thione ?
user
C13H22N4S
assistant