[{"from": "human", "value": "Provide a description of this molecule. [C][Branch1][Ring2][/C][=C][\\Cl][Cl]"}, {"from": "gpt", "value": "The molecule is the (Z)-isomer of 1,3-dichloropropene. It is a 1,3-dichloropropene and a chloroalkene. It derives from a hydride of a propene."}]