Using OB(O)c1cccnc1, COc1cccc(-c2ccc3cc(Cl)nc(OCc4ccccc4)c3c2)c1 to produce COc1cccc(-c2ccc3cc(-c4cccnc4)nc(OCc4ccccc4)c3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.