[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a pyranopyridine, a lactone and a pyridine alkaloid."}, {"from": "gpt", "value": "[C][=C][C][=C][N][=C][C][=C][Ring1][=Branch1][C][C][O][C][Ring1][=Branch1][=O]"}]