6-Hydroxy-7,10-dimethoxy-5a,6,11,11a-tetrahydro-naphthacene-5,12-dione

2,5-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-ol

1,4-萘醌

1,4-dimethoxy-5,6-dimethylenecyclohexa-1,3-diene

1,4-二甲氧基-2,3-甲基苯