Using COC(=O)C1CCNCC1, CS(=O)(=O)OCCOc1ccc(Nc2ncc(Br)cn2)cc1 to produce COC(=O)C1CCN(CCOc2ccc(Nc3ncc(Br)cn3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.