ERROR opening https://cactus.nci.nih.gov/chemical/structure/Clc1ccc%28cc1%29C3C%28%3DO%29c2ccccc2C3%3DO/file?format=sdf&get3d=True  -- Clc1ccc%28cc1%29C3C%28%3DO%29c2ccccc2C3%3DO could not be loaded.