(5,6,11,12-tetraoxo-1,4,4a,12a-tetrahydrotetracen-1-yl) acetate

琥珀酸

1,3-茚满二酮

2,2-bis(indane-1',3'-dione-2'-yl)indane-1,3-dione

1,4-diacetoxy-1,4,4a,12a-tetrahydro-naphthacene-4,5,11,12-tetraone