Using CCOC(=O)N1CCC(NCc2ccncc2NC(=O)OC(C)(C)C)CC1 to produce CCOC(=O)N1CCC(N2Cc3ccncc3NC2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.