Using COc1ccc(COc2cc(Br)cc(C#N)c2)cc1, OB(O)c1ccc2c(c1)OCO2 to produce COc1ccc(COc2cc(C#N)cc(-c3ccc4c(c3)OCO4)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.