Using CCCC[Sn](Cl)(CCCC)CCCC, CNC(=O)c1ccnc(I)c1 to produce CCCC[Sn](CCCC)(CCCC)c1cc(C(=O)NC)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.