[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is the simplest member of the class of dihydroisocoumarins that is the 3,4-dihydro derivative of isocoumarin. It is functionally related to an isocoumarin."}, {"from": "gpt", "value": "[C][C][O][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][O]"}]