Using OB(O)c1cncnc1, NC1=NC2(CO1)c1cc(O)ccc1Oc1ccc(Br)cc12 to produce NC1=NC2(CO1)c1cc(O)ccc1Oc1ccc(-c3cncnc3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.