[{"from": "human", "value": "Please give me some details about 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 any octadecatrienoate having double bonds at positions 9, 11 and 15. It is a conjugate base of a 9,11,15-octadecatrienoic acid."}]