ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCCCC%5BN%2B%5D%28CCCCCCCC%29%28C%29CCCCCCCC.%5BCl-%5D/file?format=sdf&get3d=True  -- CCCCCCCC%5BN%2B%5D%28CCCCCCCC%29%28C%29CCCCCCCC.%5BCl-%5D could not be loaded.