ERROR opening https://cactus.nci.nih.gov/chemical/structure/c2cc%28O%29ccc2Cc1cc%28ccc1O%29Cc3ccc%28O%29cc3/file?format=sdf&get3d=True  -- c2cc%28O%29ccc2Cc1cc%28ccc1O%29Cc3ccc%28O%29cc3 could not be loaded.