ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C8H16O2/c9-5-7-1-2-8%286-10%294-3-7/h7-10H%2C1-6H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C8H16O2/c9-5-7-1-2-8%286-10%294-3-7/h7-10H%2C1-6H2 could not be loaded.