Using Nc1nc(Cl)nc2[nH]ccc12, Nc1ccc2cn[nH]c2c1 to produce Nc1nc(Nc2ccc3cn[nH]c3c2)nc2[nH]ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.