[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a monocarboxylic acid anion obtained by deprotonation of the carboxy group of beta-D-4-deoxy-Delta(4)-GlcpA-(1->3)-D-GlcpNAc; major species at pH 7.3. It is a carbohydrate acid derivative anion and a monocarboxylic acid anion."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch1][#C][C@@H1][Branch1][O][C@H1][Branch1][=Branch1][O][C][Ring1][=Branch1][O][C][O][O][O][C@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C][=C][Branch1][Ring2][O][Ring1][=Branch1][C][=Branch1][C][=O][O-1][O][O]"}]