Using Cn1ccc2cc(C(=O)Nc3ccc(C[C@@H](CO)N(C[C@H](O)c4cccc(Cl)c4)C(=O)OC(C)(C)C)cc3)ccc21 to produce Cn1ccc2cc(C(=O)Nc3ccc(C[C@@H](CO)NC[C@H](O)c4cccc(Cl)c4)cc3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.