Using CCCCNC(=O)Nc1ccc(C(=O)N2CCN(Cc3ccccc3)CC2)cn1 to produce CCCCNC(=O)Nc1ccc(C(=O)N2CCNCC2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.