Using CCOC(=O)CC(=O)Nc1cc(C(F)(F)F)cnc1C(C)=O to produce CCOC(=O)c1c(O)nc2cc(C(F)(F)F)cnc2c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.