[{"from": "human", "value": "Describe this molecule. [C][C][C][C][N][=C][Branch1][C][N][N][=C][Branch1][C][N][N]"}, {"from": "gpt", "value": "The molecule is an anti-diabetic drug of the biguanide class, chemically related to metformin and phenformin. It was withdrawn from the market in most countries due to a high risk of causing lactic acidosis."}]