Using CC(C)(C)OC(=O)c1c(NC(=O)C(F)(F)F)ccc2c1OCC1CC21 to produce CC(C)(C)OC(=O)c1c(N)ccc2c1OCC1CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.