Using NN, CCOC(=O)C(O)(CC(=O)c1cccc(F)c1F)C(=O)OCC to produce CCOC(=O)c1cc(-c2cccc(F)c2F)nnc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.