ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C8H14N2O2/c1-2-6%288%289%2912%2910-5-3-4-7%2810%2911/h6H%2C2-5H2%2C1H3%2C%28H2%2C9%2C12%29/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C8H14N2O2/c1-2-6%288%289%2912%2910-5-3-4-7%2810%2911/h6H%2C2-5H2%2C1H3%2C%28H2%2C9%2C12%29 could not be loaded.