[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a nucleotide-sugar oxoanion obtained via deprotonation of the diphosphate and carboxy OH groups of UDP-2-acetamido-2-deoxy-alpha-D-ribo-hex-3-uluronic acid; major species at pH 7.3. It is a nucleotide-sugar oxoanion and a carbohydrate acid derivative anion. It is a conjugate base of an UDP-2-acetamido-2-deoxy-alpha-D-ribo-hex-3-uloseuronic acid."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C@H1][C@H1][Branch2][Ring1][C][O][C@@H1][Branch1][=Branch2][C@H1][Branch1][Branch1][C][Ring1][=Branch1][=O][O][C][=Branch1][C][=O][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@@H1][C@H1][Branch2][Ring1][Branch2][C@H1][Branch2][Ring1][Ring1][C@@H1][Branch1][Ring2][O][Ring1][Branch1][N][C][=C][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][O][O]"}]