[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][C][C][/C][=C][/C][=C][Branch2][Ring1][O][C][=C][Branch1][#Branch1][C][=C][Ring1][=Branch1][O][C][/C][=C][/C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][O][C]"}, {"from": "gpt", "value": "The molecule is polysaccharides containing hexose and pentose sugars and uronic acids, is secreted by root cells as the root grows through the soil"}]