Using CCOC(=O)C(C(=O)O)c1ccccc1, N=C(N)c1ccc(Br)cc1 to produce Oc1nc(-c2ccc(Br)cc2)nc(O)c1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.