ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29%5BC%40H%5D%28C%29Cn1ccc2cc%28ccc21%29OC/file?format=sdf&get3d=True  -- CN%28C%29%5BC%40H%5D%28C%29Cn1ccc2cc%28ccc21%29OC could not be loaded.