Using CCCc1cc(C(OCOC)(C(F)(F)F)C(F)(F)F)ccc1OCCCCN1C(=O)N(C)C(C)(C)C1=O to produce CCCc1cc(C(O)(C(F)(F)F)C(F)(F)F)ccc1OCCCCN1C(=O)N(C)C(C)(C)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.