ERROR opening https://cactus.nci.nih.gov/chemical/structure/FC%28F%29%28F%29c1cccc%28c1%29CCCN%5BC%40%40H%5D%28c3c2ccccc2ccc3%29C/file?format=sdf&get3d=True  -- FC%28F%29%28F%29c1cccc%28c1%29CCCN%5BC%40%40H%5D%28c3c2ccccc2ccc3%29C could not be loaded.