Using CCOC(=O)c1c(OC(C)C)cc(OC(C)C)nc1C(F)(F)F to produce CC(C)Oc1cc(OC(C)C)c(C(=O)O)c(C(F)(F)F)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.