ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H12O2/c1-4-5(2)8-6(3)7/h5H,4H2,1-3H3/file?format=sdf&get3d=True  -- InChI=1S/C6H12O2/c1-4-5(2)8-6(3)7/h5H,4H2,1-3H3 could not be loaded.