ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C6H12O3/c1-4-7-5%282%299-6%283%298-4/h4-6H%2C1-3H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C6H12O3/c1-4-7-5%282%299-6%283%298-4/h4-6H%2C1-3H3 could not be loaded.