Using Cn1ncc(Br)c1-c1cc(N)ccc1OCCN1CCOCC1, O=C(O)C1CCCC1 to produce Cn1ncc(Br)c1-c1cc(NC(=O)C2CCCC2)ccc1OCCN1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.