1H,1'H-2,2'-biimidazole-4,4'-diyldimethanol InChI=1/C8H10N4O2/c13-3-5-1-9-7(11-5)8-10-2-6(4-14)12-8/h1-2,13-14H,3-4H2,(H,9,11)(H,10,12 [2,2'-bi-1H-imidazole]-4,4'-dimethanol