Using Nc1nc(Cl)cc(Cl)n1, Nc1ccc(Nc2ccnc3[nH]ccc23)cc1 to produce Nc1nc(Cl)cc(Nc2ccc(Nc3ccnc4[nH]ccc34)cc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.