Using O=I(=O)Cl, CC(C)(C)OC(=O)NCCc1ccc2c(c1)NCCC2 to produce CC(C)(C)OC(=O)NCCc1cc2c(cc1I)CCCN2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.