[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][C][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 nineteen carbon straight-chain fatty acid anion. Major species at pH 7.3. It has a role as a fungal metabolite. It is a straight-chain saturated fatty acid anion and a fatty acid anion 19:0. It is a conjugate base of a nonadecanoic acid."}]