Using Cc1nc2c(c(OS(=O)(=O)C(F)(F)F)c1C=O)CCN2C, O=C([O-])O to produce Cc1nc2c(c(OS(=O)(=O)C(F)(F)F)c1OC=O)CCN2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.