[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a member of the class of biguanides that is biguanide substituted by a butyl group at position 1. It is an antidiabetic drug with potential antitumor effect. It has a role as a hypoglycemic agent, a geroprotector, a radiosensitizing agent, an antineoplastic agent and an antiviral agent. It is functionally related to a biguanide."}, {"from": "gpt", "value": "[C][C][C][C][N][=C][Branch1][C][N][N][=C][Branch1][C][N][N]"}]