[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a natural product found in Dolichospermum circinale, Microcystis aeruginosa, and other organisms with data available."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][C][=C][C][C][C@@H1][C][C][C@H1][Ring1][Branch2][N][Ring1][Branch1]"}]