ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%3DCC%28%3DC%28C%3DC1As%28%3DO%29%28O%29O%29N%20%28%3DO%29O-%29O/file?format=sdf&get3d=True  -- C1%3DCC%28%3DC%28C%3DC1As%28%3DO%29%28O%29O%29N%20%28%3DO%29O-%29O could not be loaded.