[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an organosulfonate oxoanion and a MES. It is a conjugate base of a 2-(N-morpholino)ethanesulfonic acid and a 2-(N-morpholiniumyl)ethanesulfonate."}, {"from": "gpt", "value": "[C][C][O][C][C][N][Ring1][=Branch1][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O-1]"}]