Using CN, Cc1ccc(S(=O)(=O)OCC2COc3ccc(S(C)(=O)=O)cc3O2)cc1 to produce CNCC1COc2ccc(S(C)(=O)=O)cc2O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.