[{"from": "human", "value": "Describe this molecule. [C][N][Branch1][=N][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][S][C][C][=Branch1][P][=N][C][=C][Branch1][O][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][S][C][Cl][N]"}, {"from": "gpt", "value": "The molecule is a blocker of the NMDA ion channel and has completed Phase IIa proof of concept clinical trials as a novel compound for the treatment of neuropathic pain."}]