Using CC(C)(C)OC(=O)N1CCN(c2ccc(N)cc2)CC1, O=C(O)c1ccc(O)cc1 to produce CC(C)(C)OC(=O)N1CCN(c2ccc(NC(=O)c3ccc(O)cc3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.