ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1ccc%28cc1%29C%28c2ccc%28O%29cc2%29%28C%29C/file?format=sdf&get3d=True  -- Oc1ccc%28cc1%29C%28c2ccc%28O%29cc2%29%28C%29C could not be loaded.