Using CCOC(=O)CC(=O)Nc1c(C(=O)OC)cccc1C(F)(F)F to produce CCOC(=O)c1c(O)nc2c(C(F)(F)F)cccc2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.