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