[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a 1-stannylbutan-2-ol carrying a butyl substituent on the tin atom. It derives from a hydride of a dibutylstannane."}, {"from": "gpt", "value": "[C][C][C][C][SnH2][C][C][Branch1][Ring1][C][C][O]"}]