ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCNC%28%3DO%29%5BC%40H%5D1C%5BC%40%40%5D%28C1%29%28F%29C2%3DCC%28%3DC%28C%3DC2%29CN3CCCC3%29F/file?format=sdf&get3d=True  -- CCNC%28%3DO%29%5BC%40H%5D1C%5BC%40%40%5D%28C1%29%28F%29C2%3DCC%28%3DC%28C%3DC2%29CN3CCCC3%29F could not be loaded.