Using CNc1cccc(Nc2cc(Cl)ncn2)n1, Nc1ccc(Oc2ccccc2)cc1 to produce CNc1cccc(Nc2cc(Nc3ccc(Oc4ccccc4)cc3)ncn2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.