label: 2-(1,3-benzothiazol-2-yl)-3-(1,4-dioxo-1,2,3,4-tetrahydrophthalazin-6-yl)-5-[(E)-2-phenylethenyl]-2H-tetrazol-3-ium
label_lc: 2-(1,3-benzothiazol-2-yl)-3-(1,4-dioxo-1,2,3,4-tetrahydrophthalazin-6-yl)-5-[(e)-2-phenylethenyl]-2h-tetrazol-3-ium