Using CCCCc1ccc(S(=O)(=O)Nc2ccc(N3CCC(=O)CC3)cc2)cc1, CCOC(=O)CBr to produce CCCCc1ccc(S(=O)(=O)N(CC(=O)OCC)c2ccc(N3CCC(=O)CC3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.