4-dichloromethyl-1,2,3,3,4,5,5-heptachlorocyclo-1-pentene

1,2,3,4,7,7-六氯双环[2.2.1]庚-2,5-二烯

4,5-dichlorocyclopent-4-ene-1,3-dione

1,2,4-trichloro-3,5,5-trimethoxycyclopenta-1,3-diene

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