Using CCOC(=O)C(Br)Cc1ccc(C2CCCCC2)c(Cl)c1, [I-] to produce CCOC(=O)C(I)Cc1ccc(C2CCCCC2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.