[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is the hydrochloride salt form of etoformin, a biguanide derivative with hypoglycemic activity."}, {"from": "gpt", "value": "[C][C][C][C][N][=C][Branch1][Ring2][N][C][C][N][=C][Branch1][C][N][N].[Cl]"}]