Using OB(O)c1ccc(Cl)cc1, O=C(NCCc1c[nH]c2ccc(Cl)cc12)c1ccccc1I to produce O=C(NCCc1c[nH]c2ccc(Cl)cc12)c1ccccc1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.