ERROR opening https://cactus.nci.nih.gov/chemical/structure/Ic1cc%28OC%29c%28cc1OC%29CC%28N%28C%29C%29C/file?format=sdf&get3d=True  -- Ic1cc%28OC%29c%28cc1OC%29CC%28N%28C%29C%29C could not be loaded.