[{"from": "human", "value": "Provide a brief overview of this molecule. [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 straight-chain, unsaturated, long-chain fatty acid anion that is the conjugate base of cis-parinaric acid, arising from deprotonation of the carboxylic acid group. It is a long-chain fatty acid anion, a straight-chain fatty acid anion and a polyunsaturated fatty acid anion. It is a conjugate base of a (9Z,11E,13E,15Z)-octadecatetraenoic acid."}]