[{"from": "human", "value": "Describe this molecule. [C][C][N][Branch1][Ring1][C][C][C][C][=Branch1][C][=O][N][C][=C][Branch1][Branch2][C][=C][C][=C][Ring1][=Branch1][C][C].[O].[Cl]"}, {"from": "gpt", "value": "The molecule is the hydrochloride salt form of lidocaine, an aminoethylamide and a prototypical member of the amide class anesthetics. Lidocaine interacts with voltage-gated Na+ channels in the nerve cell membrane and blocks the transient increase in permeability of excitable membranes to Na+. This prevents the generation and conduction of nerve impulses and produces a reversible loss of sensation. Lidocaine hydrochloride also exhibits class IB antiarrhythmic effects. The agent decreases the flow of sodium ions into myocardial tissue, especially on the Purkinje network, during phase 0 of the action potential, thereby decreasing depolarization, automaticity and excitability."}]