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 sodium;2-(1,3-benzothiazol-3-ium-2-yl)-5-[2-(1H-imidazol-5-yl)ethyl]-4-methyl-1H-pyrazolo[4,3-c]pyridine-3,6-dione .
user
C19H17N6NaO2S+2
assistant