[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a long-chain fatty acid anion resulting from the removal of a proton from the carboxy group of tridecanoic acid. It is a long-chain fatty acid anion and a fatty acid anion 13:0. It is a conjugate base of a tridecanoic acid."}]