9-acetyl-6,9,11-trihydroxy-8,10-dihydro-7H-tetracene-5,12-dione

2-甲基-3-(3-甲基-2-丁烯基)-1,4-萘二酮

2-ethoxy-3-ethylnaphthalene-1,4-dione

1,4,5,8-tetramethylbiphenylene

3,4-dimethylbenzo<3',4'>cyclobuta<1',2':6,7>cycloocta<1,2,3,4-def>biphenylene