Using C=CCN1c2ccc(SC)cc2C(=O)C(C)(C)S1(=O)=O to produce C=CCN1c2ccc(SC)cc2C(O)C(C)(C)S1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.