ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C10H16N2O4/c1-7%2813%2911%288%282%2914%295-6-12%289%283%2915%2910%284%2916/h5-6H2%2C1-4H3/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C10H16N2O4/c1-7%2813%2911%288%282%2914%295-6-12%289%283%2915%2910%284%2916/h5-6H2%2C1-4H3 could not be loaded.