ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1cc%28c2c%28c1%29oc3ccc%28cc3c2%3DO%29O%29O/file?format=sdf&get3d=True  -- c1cc%28c2c%28c1%29oc3ccc%28cc3c2%3DO%29O%29O could not be loaded.