Using O=C(n1ccnc1)n1ccnc1, O=C(O)c1ccc(-n2nc(Br)c3ccccc3c2=O)cc1 to produce CNC(=O)c1ccc(-n2nc(Br)c3ccccc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.