ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C8H12N2/c1-10%282%298-5-3-7%289%294-6-8/h3-6H%2C9H2%2C1-2H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C8H12N2/c1-10%282%298-5-3-7%289%294-6-8/h3-6H%2C9H2%2C1-2H3 could not be loaded.