[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a ketotetrose phosphate that is L-erythrulose carrying a phosphono substituent at position O-4. It has a role as a bacterial metabolite. It is functionally related to a L-erythrulose. It is a conjugate acid of a L-erythrulose 4-phosphate(2-). It is an enantiomer of a D-erythrulose 4-phosphate."}, {"from": "gpt", "value": "[C][Branch1][O][C@@H1][Branch1][#Branch1][C][=Branch1][C][=O][C][O][O][O][P][=Branch1][C][=O][Branch1][C][O][O]"}]