ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28%3DO%29NC1%3DCC%3DC%28C%3DC1%29C2%3DCN%3DC3C%3DC%28C%3DCC3%3DN2%29Cl/file?format=sdf&get3d=True  -- CC%28%3DO%29NC1%3DCC%3DC%28C%3DC1%29C2%3DCN%3DC3C%3DC%28C%3DCC3%3DN2%29Cl could not be loaded.