Using Nc1ccc(Cl)cc1, Clc1nnc(Cc2ccncn2)c2ccccc12 to produce Clc1ccc(Nc2nnc(Cc3ccncn3)c3ccccc23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.