ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%28C%3DCC%3DC2%29%3DC2OC%20%28C%3DCC%3DC3%29%3DC3N%3DC1/file?format=sdf&get3d=True  -- C1%28C%3DCC%3DC2%29%3DC2OC%20%28C%3DCC%3DC3%29%3DC3N%3DC1 could not be loaded.