ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC%28C%28%3DO%29OC1CN2CCC1CC2%29%28c3ccccc3%29c4ccccc4/file?format=sdf&get3d=True  -- OC%28C%28%3DO%29OC1CN2CCC1CC2%29%28c3ccccc3%29c4ccccc4 could not be loaded.