Using COC(=O)C1CCN(C(=O)OC(C)(C)C)C1c1cc(N)ccc1S(=O)(=O)C(C)C to produce COC(=O)C1CCNC1c1cc(N)ccc1S(=O)(=O)C(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.