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 (2Z)-2-[[2-(4,4-dimethylpiperazin-4-ium-1-yl)-6-methyl-1-phenylpyrimidin-1-ium-4-yl]methylidene]-3-methyl-1,3-benzothiazole .
user
C26H31N5S+2
assistant