ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28%3DO%29OC1%3DCC2%3DC%28C%3DC1%29%5BC%40H%5D3CC%5BC%40%5D4%28%5BC%40H%5D%28%5BC%40%40H%5D3CC2%29CC%5BC%40%40H%5D4O%29C/file?format=sdf&get3d=True  -- CC%28%3DO%29OC1%3DCC2%3DC%28C%3DC1%29%5BC%40H%5D3CC%5BC%40%5D4%28%5BC%40H%5D%28%5BC%40%40H%5D3CC2%29CC%5BC%40%40H%5D4O%29C could not be loaded.