[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a natural product found in Alstonia venenata with data available."}, {"from": "gpt", "value": "[C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][Branch1][Ring2][N][Ring1][Branch1][C@@H1][C][C@@H1][C@H1][Branch1][S][C][C][C@H1][Branch1][#Branch2][C@H1][Ring1][=Branch1][C][=Branch1][C][=O][O][C][O][C][N][Ring1][#C][C][C][Ring2][Ring1][Ring2]"}]