Using CCOC(=O)c1oc(-c2c(F)cccc2F)nc1-c1ccc(OC)cc1 to produce COc1ccc(-c2nc(-c3c(F)cccc3F)oc2C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.