[{"from": "human", "value": "Please give me some details about this molecule. [C][C][N][Branch1][=N][C][C@@H1][Branch1][Ring2][N][Ring1][=Branch1][C][=Branch1][C][=O][O][C][/C][=C][/P][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is a member of the class of piperazines that is piperazine substituted by a carboxy group at position 2R and a (1E)-1-phosphonoprop-1-en-3-yl group at position 4. It is an antagonist of N-methyl-D-aspartate receptors (NMDARs) and was in clinical development by Novartis for the treatment of cognition disorders and brain injuries (now discontinued). It has a role as a NMDA receptor antagonist, a neuroprotective agent and an anticonvulsant. It is a piperazinecarboxylic acid, a monocarboxylic acid, a member of phosphonic acids, an olefinic compound and a tertiary amino compound."}]