Using Clc1ccc2nc(Cl)sc2c1, Nc1cc(Cl)c(O)c(Cl)c1 to produce Nc1cc(Cl)c(Oc2nc3ccc(Cl)cc3s2)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.