Using CC(C)(C)OC(=O)N1CCc2ccc(OCC3CCN(C(=O)OCc4ccccc4)CC3)cc2C1 to produce CC(C)(C)OC(=O)N1CCc2ccc(OCC3CCNCC3)cc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.