ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%3DCC%28%3DCN%20%28%3DC1%29C2C%28C%28C%28O2%29CO%29O%29O%29C%28%3DO%29N/file?format=sdf&get3d=True  -- C1%3DCC%28%3DCN%20%28%3DC1%29C2C%28C%28C%28O2%29CO%29O%29O%29C%28%3DO%29N could not be loaded.