Using OB(O)c1cncnc1, O=C(CN1CCc2cc(Cl)nnc2C1)N1CCN(C2CCC2)CC1 to produce O=C(CN1CCc2cc(-c3cncnc3)nnc2C1)N1CCN(C2CCC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.