ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H14O2/c7-5-3-1-2-4-6-8/h7-8H,1-6H2/file?format=sdf&get3d=True -- InChI=1S/C6H14O2/c7-5-3-1-2-4-6-8/h7-8H,1-6H2 could not be loaded.