Using COC(=O)c1ccc(C)c(Br)c1, O=C(O)c1ccc(B(O)O)cc1 to produce COC(=O)c1ccc(C)c(-c2ccc(C(=O)O)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.