[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][C@@H1][C@H1][Branch1][Ring2][C][Ring1][=Branch1][C][Ring1][Ring2][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a car-3-ene (3,7,7-trimethylbicyclo[4.1.0]hept-3-ene) that has S configuration at position 1 and R configuration at position 6. It is an enantiomer of a (-)-car-3-ene."}]