ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29C%5BC%40H%5D1C%28%3DO%29N2%5BC%40H%5D%28N1%29%5BC%40%40%5D%28C3%3DCC%3DCC%3DC32%29%28C%5BC%40H%5D4C5%3DNC6%3DCC%3DCC%3DC6C%28%3DO%29N5C7%3DCC%3DCC%3DC7C%28%3DO%29N4%29O/file?format=sdf&get3d=True -- CC%28C%29C%5BC%40H%5D1C%28%3DO%29N2%5BC%40H%5D%28N1%29%5BC%40%40%5D%28C3%3DCC%3DCC%3DC32%29%28C%5BC%40H%5D4C5%3DNC6%3DCC%3DCC%3DC6C%28%3DO%29N5C7%3DCC%3DCC%3DC7C%28%3DO%29N4%29O could not be loaded.