ERROR opening https://cactus.nci.nih.gov/chemical/structure/S%28CCN1CC%5BNH%2B%5D%28CCO%29CC1%29%28%3DO%29%28%3DO%29%5BO-%5D/file?format=sdf&get3d=True -- S%28CCN1CC%5BNH%2B%5D%28CCO%29CC1%29%28%3DO%29%28%3DO%29%5BO-%5D could not be loaded.