[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an organosulfonic acid and an alpha-CH2-containing aldehyde. It is a conjugate acid of a sulfonatoacetaldehyde."}, {"from": "gpt", "value": "[C][Branch1][Ring1][C][=O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}]