ERROR opening https://cactus.nci.nih.gov/chemical/structure/CNCCC1%3DCC%28%3DC%28C%3DC1%29OP%28%3DO%29%28O%29O%29O/file?format=sdf&get3d=True  -- CNCCC1%3DCC%28%3DC%28C%3DC1%29OP%28%3DO%29%28O%29O%29O could not be loaded.