Using COc1ccc(-c2cc(C)c(C)n2-c2ccc(Br)cc2)cc1 to produce Cc1cc(-c2ccc(O)cc2)n(-c2ccc(Br)cc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.