Using COC(=O)c1cc(N(CC2CC2)S(C)(=O)=O)ccc1OC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)Oc1ccc(N(CC2CC2)S(C)(=O)=O)cc1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.