ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H5N3/c1-2-5-4-8-9-6(5)7-3-1/h1-4H,(H,7,8,9)/file?format=sdf&get3d=True  -- InChI=1S/C6H5N3/c1-2-5-4-8-9-6(5)7-3-1/h1-4H,(H,7,8,9) could not be loaded.