[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an organotin compound. It is used mainly in organic synthesis. 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, L312)"}, {"from": "gpt", "value": "[C][C][C][C][Sn][=Branch1][C][=O][C][C][C][C]"}]