Using CCOC(=O)c1ncn2c1CN=C(c1ccccc1)c1cc(Br)ccc1-2 to produce O=C(O)c1ncn2c1CN=C(c1ccccc1)c1cc(Br)ccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.