Using COC(=O)C(O)c1c(C)nc2c(ccn2Cc2ccc(F)c(F)c2)c1I to produce COC(=O)C(=O)c1c(C)nc2c(ccn2Cc2ccc(F)c(F)c2)c1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.