Using O=C1CCCC(=O)O1, CC(=O)Nc1c(I)c(N)c(I)c(C(=O)O)c1I to produce O=C(O)c1c(I)c(N2C(=O)CCCC2=O)c(I)c(N2C(=O)CCCC2=O)c1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.