ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%5BN%2B%5D1%3DC%28C%3DCC2%3DCC%3DCC%3DC21%29C%3DCC3%3DCC%3DC%28C%3DC3%29N%28C%29C.%5BI-%5D/file?format=sdf&get3d=True  -- CC%5BN%2B%5D1%3DC%28C%3DCC2%3DCC%3DCC%3DC21%29C%3DCC3%3DCC%3DC%28C%3DC3%29N%28C%29C.%5BI-%5D could not be loaded.