ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CN%28CCN1CCCCS%28%3DO%29%28%3DO%29O%29CCO/file?format=sdf&get3d=True  -- C1CN%28CCN1CCCCS%28%3DO%29%28%3DO%29O%29CCO could not be loaded.