ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C6H12N2O6/c1-7-2-11-13-5-8%284-10-9-1%296-14-12-3-7/h1-6H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C6H12N2O6/c1-7-2-11-13-5-8%284-10-9-1%296-14-12-3-7/h1-6H2 could not be loaded.