1,2,3,4-tetraphenylbenzene

5a,6,8,8a,14a,15,17,17a-octahydro-6,17:8,15-diepoxyheptacene-5,9,14,18-tetraone

2,3-二甲氧基蒽醌

3,4-dioxo-2-pyridin-1-ium-1-ylnaphthalen-1-olate