[{"from": "human", "value": "What can you tell me about this molecule? [Sn][Branch1][C][I][Branch1][C][I][Branch1][C][I][I]"}, {"from": "gpt", "value": "The molecule is an iodide of tin. 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)"}]