ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C7H12O/c1-3-4-5-6-7(2)8/h4-5H,3,6H2,1-2H3/file?format=sdf&get3d=True  -- InChI=1S/C7H12O/c1-3-4-5-6-7(2)8/h4-5H,3,6H2,1-2H3 could not be loaded.