ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DC%28C%28%3DO%29N%28N1C%29C2%3DCC%3DCC%3DC2%29N%28C%29CS%28%3DO%29%28%3DO%29O-.Na%20/file?format=sdf&get3d=True -- CC1%3DC%28C%28%3DO%29N%28N1C%29C2%3DCC%3DCC%3DC2%29N%28C%29CS%28%3DO%29%28%3DO%29O-.Na%20 could not be loaded.