ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C12H20O6/c1-4-16-10(13)8-7-9(11(14)17-5-2)12(15)18-6-3/h9H,4-8H2,1-3H3/file?format=sdf&get3d=True  -- InChI=1S/C12H20O6/c1-4-16-10(13)8-7-9(11(14)17-5-2)12(15)18-6-3/h9H,4-8H2,1-3H3 could not be loaded.