[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is conjugate base of L-serine O-sulfate having the carboxylic acid and sulfate functions in anionic form and a protonated nitrogen. It is a conjugate base of a L-serine O-sulfate."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O][S][=Branch1][C][=O][=Branch1][C][=O][O-1]"}]