ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%26%2361%3BC%28O%29Cc1cc%28OC%29c%28O%29cc1/file?format=sdf&get3d=True  -- O%26%2361%3BC%28O%29Cc1cc%28OC%29c%28O%29cc1 could not be loaded.