Using C/C(=N\C(=O)c1cn2c(n1)-c1ccc(Br)cc1OCC2)N(C)C, NNc1ccc(F)cc1F to produce Cc1nc(-c2cn3c(n2)-c2ccc(Br)cc2OCC3)n(-c2ccc(F)cc2F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.