ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC/C%28%3DN/O%29/C%28%3DC/C1%3DCC%3DC%28C%3DC1%29F%29/C/file?format=sdf&get3d=True  -- CC/C%28%3DN/O%29/C%28%3DC/C1%3DCC%3DC%28C%3DC1%29F%29/C could not be loaded.