ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1cc%28OC%29cc%28C2%3DO%29c1C%28%3DO%29c3c2cc%28C%29cc3O/file?format=sdf&get3d=True  -- Oc1cc%28OC%29cc%28C2%3DO%29c1C%28%3DO%29c3c2cc%28C%29cc3O could not be loaded.