ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%26%2361%3BC%28O%29c1cc%28O%29c%28O%29c%28O%29c1/file?format=sdf&get3d=True -- O%26%2361%3BC%28O%29c1cc%28O%29c%28O%29c%28O%29c1 could not be loaded.