Using COC(=O)[C@@H]1C[C@@H]2CN1C(=O)[C@H](C(C)C)Nc1nnc(o1)CCCCCc1ccc3ccnc(c3c1)O2, O=C1CCC(=O)N1I to produce COC(=O)[C@@H]1C[C@@H]2CN1C(=O)[C@H](C(C)C)Nc1nnc(o1)CCCCCc1ccc3c(I)cnc(c3c1)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.