Using OB(O)c1cccc(O)c1, C[C@@H]1CN(c2nc(N3CCOCC3)c3nc(Br)[nH]c3n2)C[C@H](C)O1 to produce C[C@@H]1CN(c2nc(N3CCOCC3)c3nc(-c4cccc(O)c4)[nH]c3n2)C[C@H](C)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.