ERROR opening https://cactus.nci.nih.gov/chemical/structure/Cc3cc2C%28%3DO%29c1cc%28cc%28O%29c1C%28%3DO%29c2c%28O%29c3%29OC/file?format=sdf&get3d=True  -- Cc3cc2C%28%3DO%29c1cc%28cc%28O%29c1C%28%3DO%29c2c%28O%29c3%29OC could not be loaded.