[{"from": "human", "value": "Generate a molecule based on this description. The molecule is the (S)-(+)-enantiomer of columbianetin. It is an enantiomer of a (R)-columbianetin."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][Branch2][Ring1][=Branch2][C@@H1][C][C][=C][Branch1][Ring2][O][Ring1][Branch1][C][=C][C][=C][Ring1][#Branch1][O][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][O]"}]