Using CC(C)(C)OC(=O)N(CC1CCN(C(=O)OCc2ccccc2)CC1)C1CC1 to produce CC(C)(C)OC(=O)N(CC1CCNCC1)C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.