ERROR opening https://cactus.nci.nih.gov/chemical/structure/FC%28F%29%28F%29c1ccc%28cc1%29c1cc2c%28cc1%29C1CC2N%28CC1%29CCCO/file?format=sdf&get3d=True  -- FC%28F%29%28F%29c1ccc%28cc1%29c1cc2c%28cc1%29C1CC2N%28CC1%29CCCO could not be loaded.