Using COC(=O)c1c(-c2cccc(F)c2)nn2cc(C(F)(F)F)ccc12 to produce O=C(O)c1c(-c2cccc(F)c2)nn2cc(C(F)(F)F)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.