ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C7H12O/c1-2-3-4-5-6-7-8/h3-4,7H,2,5-6H2,1H3/file?format=sdf&get3d=True  -- InChI=1S/C7H12O/c1-2-3-4-5-6-7-8/h3-4,7H,2,5-6H2,1H3 could not be loaded.