ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DC%28C%28%3DCC%3DC1%29F%29C%28%3DO%29NC2%3DNC%3DC%28N%3DC2%29C3%3DCC4%3DC%28C%3DC3Cl%29OC%28O4%29%28F%29F/file?format=sdf&get3d=True  -- CC1%3DC%28C%28%3DCC%3DC1%29F%29C%28%3DO%29NC2%3DNC%3DC%28N%3DC2%29C3%3DCC4%3DC%28C%3DC3Cl%29OC%28O4%29%28F%29F could not be loaded.