ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C1%3DNC%3DNC%3DC1F%29C%28CN2C%3DNC%3DN2%29%28C3%3DC%28C%3DC%28C%3DC3%29F%29F%29O/file?format=sdf&get3d=True -- CC%28C1%3DNC%3DNC%3DC1F%29C%28CN2C%3DNC%3DN2%29%28C3%3DC%28C%3DC%28C%3DC3%29F%29F%29O could not be loaded.