[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an organotin compound. Tin is a chemical element with the symbol Sn and atomic number 50. It is a natural component of the earth's crust and is obtained chiefly from the mineral cassiterite, where it occurs as tin dioxide. (L307, L309)"}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][Sn][Branch1][=Branch2][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C]"}]