[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a tetracosapentaenoate that is the conjugate base of (9Z,12Z,15Z,18Z,21Z)-tetracosapentaenoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a (9Z,12Z,15Z,18Z,21Z)-tetracosapentaenoic 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][=Branch1][C][=O][O-1]"}]