[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a phosphatidate(2-) obtained by deprotonation of both phosphate OH groups of dihexadecanoylphosphatidic acid; major species at pH 7.3."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][C][C][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C]"}]