ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C6H14O2/c1-4-7-6(3)8-5-2/h6H,4-5H2,1-3H3/file?format=sdf&get3d=True  -- InChI=1/C6H14O2/c1-4-7-6(3)8-5-2/h6H,4-5H2,1-3H3 could not be loaded.