Using Cn1cc(C(=O)C(=O)O)c2ccccc21, Oc1c(F)c(F)c(F)c(F)c1F to produce Cn1cc(C(=O)C(=O)Oc2c(F)c(F)c(F)c(F)c2F)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.