[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a (-)-casbene."}, {"from": "gpt", "value": "[C][/C][=C][\\C][C][Branch2][Ring1][=N][/C][=Branch2][Ring1][Branch2][=C][/C][C][/C][=Branch1][P][=C][/C@@H1][C@@H1][Branch1][Branch2][C][Ring1][Ring1][Branch1][C][C][C][C][C][/-Ring1][P][/C][/C][O]"}]