[{"from": "human", "value": "Describe this molecule. [C][O][C@H1][Branch1][Ring1][C][O][C@@H1][C@@H1][Branch2][Ring1][Branch2][C@@H1][Branch2][Ring1][Ring1][C][C@@][Branch1][Ring2][O][Ring1][=Branch1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][C][=C][O][O]"}, {"from": "gpt", "value": "The molecule is the carbohydrate acid derivative anion formed from (allyl 3-deoxy-7-O-methyl-alpha-D-manno-oct-2-ulopyranosid)onic acid by proton loss from the carboxy group. It is a conjugate base of an (allyl 3-deoxy-7-O-methyl-alpha-D-manno-oct-2-ulopyranosid)onic acid."}]