Using CC(C)(C)OC(=O)N1CC(O)(C2CN(Cc3ccccc3)CCN2Cc2ccccc2)C1 to produce CC(C)(C)OC(=O)N1CC(O)(C2CNCCN2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.