Using CN(CCCC(=O)N1CCN(c2cc(C3CCC3)nc(C(C)(C)C)n2)CC1)C(=O)OC(C)(C)C to produce CN(CCCCN1CCN(c2cc(C3CCC3)nc(C(C)(C)C)n2)CC1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.