1-(2-嘧啶基)哌嗪

2-(4-bromobutyl)hexahydro-4,7-etheno-1H-cyclobut[f]isoindole-1,3(2H)-dione

环辛四烯

tricyclo[4.2.2.02,5]dec-3,9-diene-7,8-biscarboxylic acid imide

hexahydro-4,7-etheno-1H-cyclobut[f]isobenzofuran-1,3(2H)-dione