ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%28C%28C1%28C%29C%29C%28%3DO%29OC%28C%23N%29C2%3DCC%28%3DCC%3DC2%29OC3%3DCC%3DCC%3DC3%29C/file?format=sdf&get3d=True  -- CC1%28C%28C1%28C%29C%29C%28%3DO%29OC%28C%23N%29C2%3DCC%28%3DCC%3DC2%29OC3%3DCC%3DCC%3DC3%29C could not be loaded.