[{"from": "human", "value": "Could you provide a description of this molecule? [C][N][C@@][Branch1][=Branch2][C][C][C][C][C][Ring1][=Branch1][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][Cl]"}, {"from": "gpt", "value": "The molecule is the S- (more active) enantiomer of ketamine. It has a role as an analgesic, a NMDA receptor antagonist and an intravenous anaesthetic. It is an enantiomer of a (R)-ketamine."}]