Using CC(C)(C)OC(=O)N1CCO[C@@H](c2ccc(Cl)c(F)c2)[C@H](CN)C1, CCOCC(=O)O to produce CCOCC(=O)NC[C@@H]1CN(C(=O)OC(C)(C)C)CCO[C@H]1c1ccc(Cl)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.