Using O=S(=O)(c1ccccc1)N(F)S(=O)(=O)c1ccccc1, CCOC(=O)C(C(=O)OCC)c1ccccc1 to produce CCOC(=O)C(F)(C(=O)OCC)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.