ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN1%5BC%40%40H%5D2C%5BC%40H%5D%28C3%3DCC%3DC%28C%29C%3DC3%29%5BC%40H%5D%28C%28OC4%3DCC%3DCC%3DC4%29%3DO%29%5BC%40H%5D1CC2/file?format=sdf&get3d=True -- CN1%5BC%40%40H%5D2C%5BC%40H%5D%28C3%3DCC%3DC%28C%29C%3DC3%29%5BC%40H%5D%28C%28OC4%3DCC%3DCC%3DC4%29%3DO%29%5BC%40H%5D1CC2 could not be loaded.