ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C7H16N2O/c1-7(10)9-6-4-2-3-5-8/h2-6,8H2,1H3,(H,9,10)/file?format=sdf&get3d=True  -- InChI=1S/C7H16N2O/c1-7(10)9-6-4-2-3-5-8/h2-6,8H2,1H3,(H,9,10) could not be loaded.