英文名称
5,6-Dichloro-2-[5-(5,6-dichloro-1,1,3-trioxo-1-benzothiophen-2-ylidene)-3-ethylpenta-1,3-dienyl]-1,1-dioxo-1-benzothiophen-3-olate;2-[3-ethyl-5-(1,1,3-trioxo-1-benzothiophen-2-ylidene)penta-1,3-dienyl]-1,1-dioxo-1-benzothiophen-3-olate;2-[3-methyl-5-(1,1,3-trioxo-1-benzothiophen-2-ylidene)penta-1,3-dienyl]-1,1-dioxo-1-benzothiophen-3-olate;1-thiophen-2-yl-4-(1-thiophen-2-ylpyridin-1-ium-4-yl)pyridin-1-ium