[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a quinolizine. It is a tautomer of a 4H-quinolizine and a 9aH-quinolizine."}, {"from": "gpt", "value": "[C][C][=C][N][C][=C][C][=C][C][Ring1][=Branch1][=C][Ring1][#Branch2]"}]