[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a polyunsaturated fatty acid anion that is the conjugate base of (12Z,15Z,18Z,21Z,24Z,27Z)-triacontahexaenoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a (12Z,15Z,18Z,21Z,24Z,27Z)-triacontahexaenoic 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][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}]