Using Clc1ncccn1, Cn1nc(-c2cc(O)c(Cl)cc2F)c(Cl)c1SC(F)F to produce Cn1nc(-c2cc(Oc3ncccn3)c(Cl)cc2F)c(Cl)c1SC(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.