[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule has been used in trials studying the diagnostic of Reflux, Gastroesophageal and Gastroesophageal Reflux Disease."}, {"from": "gpt", "value": "[C][N][C][=Branch1][#Branch2][=N][C][=Branch1][Ring2][=N][Ring1][Branch1][C][O][N][C][C][C][O][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][N][C][C][C][C][C][Ring1][=Branch1]"}]