[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][Branch2][Ring2][Branch1][O][C@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][O][C@@H1][C@@H1][Branch2][Ring1][C][C@H1][Branch1][=C][C][Branch1][#Branch2][O][C@@H1][Ring1][=Branch1][C][=Branch1][C][=O][O][O][O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a D-galacturonic acid having a 4-deoxy-alpha-L-threo-hex-4-enopyranosyluronic acid moiety attached at the 4-position. It is a conjugate acid of a 4-(4-deoxy-beta-D-gluc-4-enosyluronate)-D-galacturonate(2-)."}]