ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CN%28CCN1CCN2C3%3DCC%3DCC%3DC3NC2%3DO%29C4%3DCC%3DCC%28%3DC4%29C%28F%29%28F%29F/file?format=sdf&get3d=True  -- C1CN%28CCN1CCN2C3%3DCC%3DCC%3DC3NC2%3DO%29C4%3DCC%3DCC%28%3DC4%29C%28F%29%28F%29F could not be loaded.