[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][C][O][C][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][Ring2][=C][Ring1][#Branch2][C][=Branch1][C][=O][N][C][C][N][Branch1][Ring1][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is one of the most potent and toxic of the long-acting local anesthetics and its parenteral use is restricted to spinal anesthesia. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1006)"}]