ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C5H12N2O2/c6-3-1-2-4%287%295%288%299/h4H%2C1-3%2C6-7H2%2C%28H%2C8%2C9%29/t4-/m0/s1/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C5H12N2O2/c6-3-1-2-4%287%295%288%299/h4H%2C1-3%2C6-7H2%2C%28H%2C8%2C9%29/t4-/m0/s1 could not be loaded.