ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H10O/c7-6-4-2-1-3-5-6/h2,4,6-7H,1,3,5H2/file?format=sdf&get3d=True  -- InChI=1S/C6H10O/c7-6-4-2-1-3-5-6/h2,4,6-7H,1,3,5H2 could not be loaded.