ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%5BC%40H%5D%28C%28O%29%3DO%29C1%3DCC%3DCC%3DC1/file?format=sdf&get3d=True  -- O%5BC%40H%5D%28C%28O%29%3DO%29C1%3DCC%3DCC%3DC1 could not be loaded.