Using N=C(N)NC(=N)Nc1ccc(OC(F)(F)F)cc1, CCCCCCCCCC=O to produce CCCCCCCCCC1N=C(N)N=C(N)N1c1ccc(OC(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.