[{"from": "human", "value": "Could you give me a brief overview of this molecule? [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]"}, {"from": "gpt", "value": "The molecule is a (-)-casbene."}]