ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C3H7NO2/c1-4-2-3%285%296/h4H%2C2H2%2C1H3%2C%28H%2C5%2C6%29/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C3H7NO2/c1-4-2-3%285%296/h4H%2C2H2%2C1H3%2C%28H%2C5%2C6%29 could not be loaded.