5-[(氯乙酰氧基)甲基]-2-降冰片烯

4-(cyclopenta-2,4-dien-1-ylidenemethyl)-N,N-dimethylaniline

(3aR*,4S*,7R*,7aS*)-3a,4,7,7a-tetrahydro-2-phenyl-4,7-methano-1H-isoindole-1,3(2H)-dione

2-(cyclopenta-2,4-dien-1-ylidenemethyl)-1H-pyrrole

1,4,4a,9a-tetrahydro-1,4-methanoanthracene-9,10-dione