ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C5H5N5/c6-4-3-5%289-1-7-3%2910-2-8-4/h1-2H%2C%28H3%2C6%2C7%2C8%2C9%2C10%29/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C5H5N5/c6-4-3-5%289-1-7-3%2910-2-8-4/h1-2H%2C%28H3%2C6%2C7%2C8%2C9%2C10%29 could not be loaded.