ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H8N2O2/c1-3-4(2)6(10)8-7-5(3)9/h1-2H3,(H,7,9)(H,8,10)/file?format=sdf&get3d=True  -- InChI=1S/C6H8N2O2/c1-3-4(2)6(10)8-7-5(3)9/h1-2H3,(H,7,9)(H,8,10) could not be loaded.