[{"from": "human", "value": "Describe this molecule. [C][/C][=C][Branch1][C][\\C][/C][=Branch1][C][=O][O][C][C][C][Branch2][Ring1][=Branch2][C][Branch1][=Branch1][O][C][Ring1][=Branch1][C][O][C][Branch1][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][O]"}, {"from": "gpt", "value": "The molecule is a 4-O-[(E)-2-methyl-2-butenoyl]ascaroside derived from (8R)-8-hydroxynonanoic acid. It is a metabolite of the nematode Caenorhabditis elegans. It has a role as a Caenorhabditis elegans metabolite. It is a 4-O-[(E)-2-methyl-2-butenoyl]ascaroside and a monocarboxylic acid. It is functionally related to an ascr#10 and an (8R)-8-hydroxynonanoic acid."}]