ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C4H7N5O/c1-10-4-8-2(5)7-3(6)9-4/h1H3,(H4,5,6,7,8,9)/file?format=sdf&get3d=True  -- InChI=1S/C4H7N5O/c1-10-4-8-2(5)7-3(6)9-4/h1H3,(H4,5,6,7,8,9) could not be loaded.