Using OB(O)c1ccc2c(c1)c1ccccc1n2-c1ccccc1, CC(C)(C)c1cc(Cl)ncn1 to produce CC(C)(C)c1cc(-c2ccc3c(c2)c2ccccc2n3-c2ccccc2)ncn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.