ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C16H24N2/c1-12%282%2918%2813%283%294%2910-9-14-11-17-16-8-6-5-7-15%2814%2916/h5-8%2C11-13%2C17H%2C9-10H2%2C1-4H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C16H24N2/c1-12%282%2918%2813%283%294%2910-9-14-11-17-16-8-6-5-7-15%2814%2916/h5-8%2C11-13%2C17H%2C9-10H2%2C1-4H3 could not be loaded.