Using Brc1ccc(N2CCNCC2)cc1, COC(=O)C1(CS(=O)(=O)Cl)CCOCC1 to produce O=C(O)C1(CS(=O)(=O)N2CCN(c3ccc(Br)cc3)CC2)CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.