Using COC(=O)C1(NCC(=O)c2cc(F)cc(F)c2)CCCC1, CCOC(=O)CN to produce CCOC(=O)CN1C(=O)C2(CCCC2)NCC1c1cc(F)cc(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.