Using O=S(=O)(c1ccccc1)N(F)S(=O)(=O)c1ccccc1, COC(=O)CCC(C(=O)OC)N1C(=O)c2ccccc2C1=O to produce COC(=O)CCC(F)(C(=O)OC)N1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.