Using O=[N+]([O-])c1c(F)cc(F)c(F)c1Nc1ccc(I)cc1F, CCOC(CO)OCC to produce CCOC(COc1cc(F)c(F)c(Nc2ccc(I)cc2F)c1[N+](=O)[O-])OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.