1,2,3,4-tetrachloro-5,6-bis(chloromethyl)benzene

1,2,3,4-tetrachloro-5,6-bis(dichloromethyl)benzene

3,4,5,6-四氯邻苯二甲腈

carbon monoxide

2,3-dichloro-5,6-dimethylcyclohexa-2,5-diene-1,4-dione