Using c1ccc2c(c1)Nc1ccccc1O2, Nc1nc(N)c2nc(CBr)cnc2n1 to produce Nc1nc(N)c2nc(CN3c4ccccc4Oc4ccccc43)cnc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.