Using Cc1nn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)c(N)c1C#N, COC(OC)OC to produce COC=Nc1c(C#N)c(C)nn1-c1c(Cl)cc(C(F)(F)F)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.