Using CCOC(=O)C(N)=NO, O=C(O)c1cc(Br)c(O)c(Br)c1 to produce CCOC(=O)c1noc(-c2cc(Br)c(O)c(Br)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.