Using CCCCC(C)Br, O=C([O-])c1c(I)c(I)c(C(=O)[O-])c(I)c1I to produce CCCCC(C)OC(=O)c1c(I)c(I)c(C(=O)OC(C)CCCC)c(I)c1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.