ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%28C%29CCC%28C%29%28C%29C2%3DC1C%3DCC%28NC%28%3DO%29C1%3DCC%3DC%28C%3DC1%29C%28O%29%3DO%29%3DC2/file?format=sdf&get3d=True -- CC1%28C%29CCC%28C%29%28C%29C2%3DC1C%3DCC%28NC%28%3DO%29C1%3DCC%3DC%28C%3DC1%29C%28O%29%3DO%29%3DC2 could not be loaded.