Using CCNCC1OCc2ccc(S(C)(=O)=O)cc2O1, BrCc1ccccc1 to produce CCN(Cc1ccccc1)CC1OCc2ccc(S(C)(=O)=O)cc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.