Using CN, COC(=O)c1ccccc1S(=O)(=O)n1cc(C=O)cc1-c1ccccc1 to produce CNCc1cc(-c2ccccc2)n(S(=O)(=O)c2ccccc2C(=O)OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.