Using CC(C)(C)OC(=O)N[C@H]1C[C@H](C(C)(C)O)CC[C@H]1NC(=O)c1cc2cc(Cl)ccc2[nH]1 to produce CC(C)(O)[C@@H]1CC[C@@H](NC(=O)c2cc3cc(Cl)ccc3[nH]2)[C@@H](N)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.