[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch2][Ring1][Ring2][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][C][C][C][C][Ring1][Branch1][=O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an oxo monocarboxylic acid anion that is the conjugate base of loxoprofen, obtained by deprotonation of the carboxy group. It is a conjugate base of a loxoprofen."}]