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 5-methyl-2-[[(3R)-3-methylpiperidin-1-ium-1-yl]methyl]-[1,2,4]triazolo[4,3-a]quinoline-1-thione .
user
C18H23N4S+
assistant