Using CCOC1N=COC1(CC(CC)c1cccc(Cl)c1OC)C(F)(F)F to produce CCC(CC(O)(C=O)C(F)(F)F)c1cccc(Cl)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.