Using CC(C)(C)OC(=O)N1CCC[C@@H](C(O)c2cccc(Cl)c2)C1, CCOC(=O)CCBr to produce CCOC(=O)CCOC(c1cccc(Cl)c1)[C@@H]1CCCN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.