ERROR opening https://cactus.nci.nih.gov/chemical/structure/OCC1OC%28Oc2ccc%28C%3DCC%28%3DO%29O%29cc2%29C%28O%29C%28O%29C1O/file?format=sdf&get3d=True  -- OCC1OC%28Oc2ccc%28C%3DCC%28%3DO%29O%29cc2%29C%28O%29C%28O%29C1O could not be loaded.