[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a deuterated compound that is citric acid in which the four methylene hydrogens are replaced by deuterium. It is a deuterated compound, a tricarboxylic acid and a tertiary alcohol."}, {"from": "gpt", "value": "[2H][C][Branch1][C][2H][Branch1][=Branch1][C][=Branch1][C][=O][O][C][Branch1][=Branch1][C][=Branch1][C][=O][O][Branch1][=N][C][Branch1][C][2H][Branch1][C][2H][C][=Branch1][C][=O][O][O]"}]