[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an orally available potassium channel blocker that increases acetylcholine in synaptic clefts of peripheral nerve endings and is used to treat the Lambert-Eaton myasthenic syndrome. Amifampridine is associated with a low rate of transient serum enzyme elevations during therapy but has not been linked with instances of clinically apparent acute liver injury."}, {"from": "gpt", "value": "[C][=C][N][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][N][N]"}]