Using CCC1(COS(=O)(=O)c2ccc(C)cc2)COC1, O=Cc1cc(Br)ccc1O to produce CCC1(COc2ccc(Br)cc2C=O)COC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.