Using CCCN(C(=O)OCc1ccccc1)C1CCN(C(=O)OC(C)(C)C)CC1, CC(=O)Cl to produce CCCN(C(=O)OCc1ccccc1)C1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.