ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H6N4O2/c1-10-4-3(2-7-10)5(11)9-6(12)8-4/h2,7H,1H3,(H,9,11,12)/file?format=sdf&get3d=True  -- InChI=1S/C6H6N4O2/c1-10-4-3(2-7-10)5(11)9-6(12)8-4/h2,7H,1H3,(H,9,11,12) could not be loaded.