Using O=N[O-], CNc1cc(-c2ccc(OCOCCOC)c(C(F)(F)F)c2)nc(C#N)c1N to produce COCCOCOc1ccc(-c2cc3c(nnn3C)c(C#N)n2)cc1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.