ERROR opening https://cactus.nci.nih.gov/chemical/structure/%5BCl-%5D.O%3DC%28SCC%28CSC%28%3DO%29N%29%5BNH%2B%5D%28C%29C%29N/file?format=sdf&get3d=True -- %5BCl-%5D.O%3DC%28SCC%28CSC%28%3DO%29N%29%5BNH%2B%5D%28C%29C%29N could not be loaded.