Using [I-], Cc1nnc(CCl)n1-c1ccc(Cl)cc1C(=O)c1ccccc1Cl to produce Cc1nnc(CI)n1-c1ccc(Cl)cc1C(=O)c1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.