[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is dianion of D-erythritol 4-phosphate arising from deprotonation of both OH groups of the phosphate. It is a conjugate base of a D-erythritol 4-phosphate."}, {"from": "gpt", "value": "[C][Branch2][Ring1][Ring1][C@@H1][Branch1][#C][C@@H1][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][O][O][O]"}]