Using O=S(=O)(Cl)c1ccccc1, O=C(CNCC(O)c1cccc(Br)c1)Nc1ccccc1 to produce O=C(CN(CC(O)c1cccc(Br)c1)S(=O)(=O)c1ccccc1)Nc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.