[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=C][Branch1][Ring2][O][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][#Branch1][/C][=C][/C][=C][/C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is major species at pH 7.3 It is a conjugate base of an (E,E)-piperic acid."}]