Using CCOC(=O)c1cc(-c2ccccc2)n(S(=O)(=O)c2cccc(Cl)c2)c1C to produce Cc1c(CO)cc(-c2ccccc2)n1S(=O)(=O)c1cccc(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.