Using OB(O)c1cnc(Cl)nc1, COC(=O)Cc1c(C)n[nH]c1-c1ccc(Cl)cc1 to produce COC(=O)Cc1c(C)nn(-c2cnc(Cl)nc2)c1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.