Using OCC(F)(F)F, CC(C)(C)OC(=O)N1CC2CC(C(=O)O)CC2C1 to produce CC(C)(C)OC(=O)N1CC2CC(C(=O)OCC(F)(F)F)CC2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.