Using O=C(c1ccccc1)C(F)(F)F, CCOC(=O)[C@@H](N)CC(C)C to produce CC(C)C[C@H](N=C(c1ccccc1)C(F)(F)F)C(=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.