Using CCOC(=O)CC1CCc2c1[nH]c1ccc(OCc3ccc(OCC4CC4)c(C(F)(F)F)c3)cc21 to produce O=C(O)CC1CCc2c1[nH]c1ccc(OCc3ccc(OCC4CC4)c(C(F)(F)F)c3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.