Using [O-]c1ccc2c(c1)OCO2, CCOC(=O)c1c(F)cccc1F to produce CCOC(=O)c1c(F)cccc1Oc1ccc2c(c1)OCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.