2,2'-Methylenebis[N-(tetrahydro-2-furfuryl)-1H-benzimidazole-5-carboxamidine] 2-[(6-{imino[(tetrahydrofuran-2-ylmethyl)amino]methyl}-1H-benzimidazol-2-yl)methyl]-N-(tetrahydrofuran-2-ylmethyl)-1H-benzimidazole-5-carboximidamide AIDS-195635 AIDS195635