Using CCCCCC1CCC(C2CCC(c3ccc(OCC)c(F)c3F)C(O)C2)CC1 to produce CCCCCC1CCC(C2CCC(c3ccc(OCC)c(F)c3F)C(=O)C2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.