[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an isochromene. It is a tautomer of a 3H-isochromene."}, {"from": "gpt", "value": "[C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][O][Ring1][#Branch2]"}]