Using NNC(=O)c1c(F)cccc1F, CC(C)(C)c1cc(Cl)nnc1Cl to produce CC(C)(C)c1cc2nnc(-c3c(F)cccc3F)n2nc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.