Using CCCC[Sn](CCCC)(CCCC)c1ccccn1, COC(=O)c1ccc2ncc(I)n2c1 to produce COC(=O)c1ccc2ncc(-c3ccccn3)n2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.