Using COC(=O)c1ccccc1-c1cc(-c2cccc(C(F)(F)F)c2)no1 to produce O=C(O)c1ccccc1-c1cc(-c2cccc(C(F)(F)F)c2)no1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.