Using C[C@@H](OCc1ccccc1)[C@@H](COCC(=O)c1ccc(Cl)cc1)NC(=O)OC(C)(C)C to produce C[C@@H](OCc1ccccc1)[C@H]1COC[C@@H](c2ccc(Cl)cc2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.