Using CC(C)(Br)C(=O)O, CCCn1c(C)c(-c2ccc(OC)cc2)c2cc(O)ccc21 to produce CCCn1c(C)c(-c2ccc(OC)cc2)c2cc(OC(C)(C)C(=O)O)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.