Using CCC(O)c1ccc(Cl)c2nc3n(c12)CCCN3c1ccc(OC)cc1Cl, OCC(F)(F)F to produce CCC(OCC(F)(F)F)c1ccc(Cl)c2nc3n(c12)CCCN3c1ccc(OC)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.