Using COC(=O)c1nn(-c2cc3c(cc2F)OC(F)(F)C(F)(F)O3)cc(OC)c1=O to produce COc1cn(-c2cc3c(cc2F)OC(F)(F)C(F)(F)O3)nc(C(=O)O)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.