[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a long-chain unsaturated fatty acid anion that is the conjugate base of (13Z,16Z)-docosadienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a polyunsaturated fatty acid anion, a long-chain fatty acid anion and a docosadienoate. It is a conjugate base of a (13Z,16Z)-docosadienoic acid."}, {"from": "gpt", "value": "[C][C][C][C][C][/C][=C][\\C][/C][=C][\\C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}]