[{"from": "human", "value": "Provide a brief overview of this molecule. [C][O][C][=Branch1][C][=O][C][C@@H1][C][=C][C@H1][Branch1][=Branch2][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][N]"}, {"from": "gpt", "value": "The molecule is a member of pyrans."}]