[{"from": "human", "value": "Provide a description of this molecule. [C][Branch1][Ring2][/C][=C][/Cl][Cl]"}, {"from": "gpt", "value": "The molecule is a colorless liquid with a sweet smell. It is one of 2 isomers of 1,3-D. Trans-1,3-Dichloropropene is widely used as a preplanting soil fumigant for the control of nematodes, and it has been available for agricultural use in many formulations (L893)."}]