[{"from": "human", "value": "Describe this molecule. [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 hexadecatrienoate that is the conjugate base of (7Z,10Z,13Z)-hexadecatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an all-cis-7,10,13-hexadecatrienoic acid."}]