ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%3DCC%28%3DNC%28%3DC1Cl%29C%28O%29%3DO%29Cl/file?format=sdf&get3d=True  -- C1%3DCC%28%3DNC%28%3DC1Cl%29C%28O%29%3DO%29Cl could not be loaded.