Using Clc1ncc(Br)c(Cl)n1, Oc1ccc(F)cc1F to produce Fc1ccc(Oc2ncc(Br)c(Oc3ccc(F)cc3F)n2)c(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.