[{"from": "human", "value": "Create a molecule with the structure as the one described. 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."}, {"from": "gpt", "value": "[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]"}]