[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a monocarboxylic acid anion that is the conjugate base of oleanolic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It has a role as a plant metabolite. It is a conjugate base of an oleanolic acid."}, {"from": "gpt", "value": "[C][C@][C][C][C@@H1][Branch2][Branch1][=Branch2][C][Branch2][Ring2][P][C@@H1][Ring1][=Branch1][C][C][C@@][Branch2][Ring2][#Branch1][C@@H1][Ring1][#Branch2][C][C][=C][C@][Ring1][=Branch1][Branch2][Ring1][#Branch2][C][C][C@@][Branch1][S][C@H1][Ring1][=Branch1][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][C][=Branch1][C][=O][O-1][C][C][Branch1][C][C][C][O]"}]