Using CCOC(C)n1cc(B2OC(C)(C)C(C)(C)O2)cn1, COc1c(C(C)=O)cc(Cl)c(C)c1Br to produce CCOC(C)n1cc(-c2c(C)c(Cl)cc(C(C)=O)c2OC)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.