Using CCOC(=O)C1(S(=O)(=O)c2ccc(OC)cc2)CCN(Cc2ccc(Br)cc2)CC1, C1CCOC1 to produce COc1ccccc1S(=O)(=O)C1(C(=O)O)CCN(Cc2ccc(Br)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.