ERROR opening https://cactus.nci.nih.gov/chemical/structure/Clc1nc%28nc%28OC%29c1N/C2%3DN/CCN2%29C/file?format=sdf&get3d=True  -- Clc1nc%28nc%28OC%29c1N/C2%3DN/CCN2%29C could not be loaded.