ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C18H30/c1-18-11-4-7-17%2818%2916-9-8-13-5-2-3-6-14%2813%2915%2816%2910-12-18/h13-17H%2C2-12H2%2C1H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C18H30/c1-18-11-4-7-17%2818%2916-9-8-13-5-2-3-6-14%2813%2915%2816%2910-12-18/h13-17H%2C2-12H2%2C1H3 could not be loaded.