ERROR opening https://cactus.nci.nih.gov/chemical/structure/Cc1c%28C%29c%28C%29c%28C%29c%28C%29c1C/file?format=sdf&get3d=True  -- Cc1c%28C%29c%28C%29c%28C%29c%28C%29c1C could not be loaded.