ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCN%28CC%29CCOC1%3DCC%3DCC%3DC1C2%3DCC%3DCC%3DC2.Cl/file?format=sdf&get3d=True  -- CCN%28CC%29CCOC1%3DCC%3DCC%3DC1C2%3DCC%3DCC%3DC2.Cl could not be loaded.