Using OB(O)c1ccc2[nH]ccc2c1, COc1ccc(-c2cncc(C#N)c2Cl)cc1OC to produce COc1ccc(-c2cncc(C#N)c2-c2ccc3[nH]ccc3c2)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.