[{"from": "human", "value": "Please give me some details about this molecule. [C][N+1][Branch1][#Branch1][C][C][C][C][Ring1][Branch1][C][C][C][C][C][N+1][Branch1][#Branch1][C][C][C][C][Ring1][Branch1][C]"}, {"from": "gpt", "value": "The molecule is a dication whose structure comprises a pentane backbone linking two 1-methylpyrrolidinium groups; a nicotinic antagonist used as a ganglionic blocking agent in hypertension. It contains a pyrrolidinium ion."}]