ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C3H6O3/c4-1-3%286%292-5/h1%2C3%2C5-6H%2C2H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C3H6O3/c4-1-3%286%292-5/h1%2C3%2C5-6H%2C2H2 could not be loaded.