Using O=C(O)c1c[nH]c2ncc(Br)nc12, NC1CCCC(N)C1 to produce NC1CCCC(NC(=O)c2c[nH]c3ncc(Br)nc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.