Using CC(C)(C)OC(=O)N1CCN(C2(C)CCN(Cc3ccccc3)CC2)CC1 to produce CC(C)(C)OC(=O)N1CCN(C2(C)CCNCC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.