Using CS(=O)(=O)N1CCC(N)CC1, CCOC(=O)C(C)(C)Br to produce CCOC(=O)C(C)(C)NC1CCN(S(C)(=O)=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.