[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a natural product found in Strychnos usambarensis with data available."}, {"from": "gpt", "value": "[C][N][C][C][C][=C][Branch2][Ring2][Branch2][C@@H1][Ring1][=Branch1][C][C@H1][C][C@H1][C@][Branch1][N][C][C][N][Ring1][Branch1][C][C@@H1][Ring1][=Branch2][C][=C][C][=C][Branch1][#Branch2][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][N][C][Ring1][P][=O][N][C][=C][C][=C][C][=C][Ring2][Ring1][S][Ring1][=Branch1]"}]