[{"from": "human", "value": "Provide a description of this molecule. [C][C][/C][=C][\\C][C][=Branch1][C][=O][/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 docosanoid anion that is the conjugate base of (7Z,10Z,13Z,15E,19Z)-17-oxodocosapentaenoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a docosanoid anion, a long-chain fatty acid anion, an oxo fatty acid anion and a polyunsaturated fatty acid anion. It is a conjugate base of a (7Z,10Z,13Z,15E,19Z)-17-oxodocosapentaenoic acid."}]