Using Fc1cc2ncnc(Cl)c2cc1F, COC(=O)C1CCN(C(=O)OC(C)(C)C)CC1 to produce COC(=O)C1(c2ncnc3cc(F)c(F)cc23)CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.