Using COC(=O)C1=C(O)c2ccccc2S(=O)(=O)N1, COS(=O)(=O)OC to produce COC(=O)C1=C(O)c2ccccc2S(=O)(=O)N1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.