Using O=C([O-])[O-], COc1c(S(N)(=O)=O)cc(C(=O)O)c2c1OCCO2 to produce COC(=O)c1cc(S(N)(=O)=O)c(OC)c2c1OCCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.