ERROR opening https://cactus.nci.nih.gov/chemical/structure/CSc1ccc2%5BnH%5Dcc%28CCN%28C%29C%29c2c1/file?format=sdf&get3d=True  -- CSc1ccc2%5BnH%5Dcc%28CCN%28C%29C%29c2c1 could not be loaded.