Using COC(=O)[C@@H]1CN(C(=O)OC(C)(C)C)C[C@@H]1c1cccc(C(F)(F)F)c1C(=O)OC(C)C to produce CC(C)OC(=O)c1c([C@H]2CN(C(=O)OC(C)(C)C)C[C@H]2C(=O)O)cccc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.