Using O=C(CCl)NC(=O)Nc1ccc(C(O)(C(F)(F)F)C(F)(F)F)cc1 to produce O=C1COC(Nc2ccc(C(O)(C(F)(F)F)C(F)(F)F)cc2)=N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.