Using CCN(C)S(=O)(=O)c1ccc(Cl)nc1, C[Sn](C)(C)C to produce CCN(C)S(=O)(=O)c1ccc([Sn](C)(C)C)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.