ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DCC2%3DC3C%28%3DC1C%29C%28CCN3C4%3DC%28N2C%5BC%40%40H%5D%28%5BC%40%40H%5D%28%5BC%40%40H%5D%28COP%28%3DO%29%28%5BO-%5D%29%5BO-%5D%29O%29O%29O%29NC%28%3DO%29NC4%3DO%29%28C%29C/file?format=sdf&get3d=True -- CC1%3DCC2%3DC3C%28%3DC1C%29C%28CCN3C4%3DC%28N2C%5BC%40%40H%5D%28%5BC%40%40H%5D%28%5BC%40%40H%5D%28COP%28%3DO%29%28%5BO-%5D%29%5BO-%5D%29O%29O%29O%29NC%28%3DO%29NC4%3DO%29%28C%29C could not be loaded.