[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Allium cepa with data available."}, {"from": "gpt", "value": "[C][C][C@H1][Branch1][=Branch1][S][S][/C][=C][\\C][S@][=Branch1][C][=O][/C][=C][/C]"}]