[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is the simplest member of the class of 3-ethylcatechols that is catechol bearing an ethyl substituent at position 3."}, {"from": "gpt", "value": "[C][C][C][=C][Branch1][#Branch2][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][O]"}]