ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C6H17N3/c7-3-1-5-9-6-2-4-8/h9H%2C1-8H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C6H17N3/c7-3-1-5-9-6-2-4-8/h9H%2C1-8H2 could not be loaded.