Using BrCC1CO1, Cc1ccc(S(=O)(=O)n2ccc3c2CCC(Br)C3=O)cc1 to produce Cc1ccc(S(=O)(=O)n2ccc3c2CCC(Br)C32OCC(CBr)O2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.