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