Using CCNC(=O)Nc1nc2cc(Br)nc(Br)c2s1, OB(O)c1cccnc1 to produce CCNC(=O)Nc1nc2cc(-c3cccnc3)nc(-c3cccnc3)c2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.