ERROR opening https://cactus.nci.nih.gov/chemical/structure/c24c%28c1ccccc1%5BnH%5D2%29CC5N%28CC3CC3%29CCC46C5CCCC6/file?format=sdf&get3d=True  -- c24c%28c1ccccc1%5BnH%5D2%29CC5N%28CC3CC3%29CCC46C5CCCC6 could not be loaded.