3,3,6,6-tetramethyl-2,4,5,7-tetrahydroacridine-1,8-dione

4,4-二甲基环己烯

2-苯甲酰基-5,5-二甲基-1,3-环己二酮

2,2''-methanediyl-bis-[1,2']biindenylidene-3,1',3'-trione

2,2,7,7-tetramethyl-1,2,3,6,7,8-hexahydrocinnolino[5,4,3-cde]cinnoline