ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1ccc2C%28%3DO%29c3ccccc3C%28%3DO%29c2c1O/file?format=sdf&get3d=True  -- Oc1ccc2C%28%3DO%29c3ccccc3C%28%3DO%29c2c1O could not be loaded.