Using O=C(O)c1ccc2ccccc2n1, Nc1cn2c(Br)cnc(N3CCOCC3)c2n1 to produce O=C(Nc1cn2c(Br)cnc(N3CCOCC3)c2n1)c1ccc2ccccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.