[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a natural product found in Lithothamnion corallioides and Phymatolithon calcareum with data available."}, {"from": "gpt", "value": "[C][C][/C][=C][\\C][/C][=C][\\C@H1][Branch2][Ring1][Ring1][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][C][C][C][=Branch1][C][=O][O][C][C][O]"}]