Using CNc1cc(-c2cnc3cc(Cl)ccn23)cc(Cl)n1, OB(O)c1ccccc1 to produce CNc1cc(-c2cnc3cc(Cl)ccn23)cc(-c2ccccc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.