[{"from": "human", "value": "Describe this molecule. [C][C][Branch2][Ring1][Ring2][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is the conjugate base of fenoprofen. It is a conjugate base of a fenoprofen."}]