Using O=C(O)c1n[nH]c2cc(Cl)c(Br)cc12, OCc1ccc(B(O)O)cc1 to produce O=C(O)c1n[nH]c2cc(Cl)c(-c3ccc(CO)cc3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.