Using Fc1cncc(F)c1, Cn1ccc(NC(=O)c2nccnc2N)n1 to produce Cn1ccc(NC(=O)c2nccnc2Nc2cncc(F)c2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.