ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DCC%28%3DNO1%29NC%28%3DO%29C%28C2%3DCC%3DCC%3DC2%29N3CCCC4%3DCC%3DCC%3DC43/file?format=sdf&get3d=True  -- CC1%3DCC%28%3DNO1%29NC%28%3DO%29C%28C2%3DCC%3DCC%3DC2%29N3CCCC4%3DCC%3DCC%3DC43 could not be loaded.