ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29%5BC%40H%5D1C%28%3DO%29N2%5BC%40%40H%5D%28C%5BC%40%40%5D3%28%5BC%40H%5D2NC4%3DCC%3DCC%3DC43%29C%5BC%40H%5D5C%28%3DC%29CC%5BC%40%40H%5D6%5BC%40%40%5D5%28CCCC6%28C%29C%29C%29C%28%3DO%29N1/file?format=sdf&get3d=True -- CC%28C%29%5BC%40H%5D1C%28%3DO%29N2%5BC%40%40H%5D%28C%5BC%40%40%5D3%28%5BC%40H%5D2NC4%3DCC%3DCC%3DC43%29C%5BC%40H%5D5C%28%3DC%29CC%5BC%40%40H%5D6%5BC%40%40%5D5%28CCCC6%28C%29C%29C%29C%28%3DO%29N1 could not be loaded.