Using COCc1cc(F)c(-c2nc(C(=O)OC)ccc2F)c(F)c1 to produce COCc1cc(F)c(-c2nc(C(=O)O)ccc2F)c(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.