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