Using COC(=O)NCCC[C@@](O)(c1cccc(Cl)c1)[C@@H]1CCCN(C(=O)OC(C)(C)C)C1 to produce COC(=O)NCCC[C@@](O)(c1cccc(Cl)c1)[C@@H]1CCCNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.