ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H10O2/c1-2-5-8-6-3-4-7/h2,4H,1,3,5-6H2/file?format=sdf&get3d=True  -- InChI=1S/C6H10O2/c1-2-5-8-6-3-4-7/h2,4H,1,3,5-6H2 could not be loaded.